Physics Physics Practice Problems Solutions Library

# Projectile Motion: Positive Launch Solutions Library

### Browse Solutions

104 solutions

Projectile Motion: Positive Launch

#### Q. Two stones are launched from the top of a tall building. One stoneis thrown in a direction 30.0° above the horizontal with a speed of 16.0 m/s; the...

Solved • Jun 2, 2020

Projectile Motion: Positive Launch

#### Q. A rock thrown with speed 10.5 m/s and launch angle 30.0° (above the horizontal) travels a horizontal distance of = 18.0 m before hitting the ground...

Solved • May 26, 2020

Projectile Motion: Positive Launch

#### Q. To understand how the trajectory of an object depends on its initial velocity, and to understand how air resistance affects the trajectory. For thi...

Solved • May 7, 2020

Projectile Motion: Positive Launch

#### Q. To understand how the trajectory of an object depends on its initial velocity, and to understand how air resistance affects the trajectory. For thi...

Solved • May 7, 2020

Projectile Motion: Positive Launch

#### Q. To understand how the trajectory of an object depends on its initial velocity, and to understand how air resistance affects the trajectory. For thi...

Solved • May 7, 2020

Projectile Motion: Positive Launch

#### Q. To understand how the trajectory of an object depends on its initial velocity, and to understand how air resistance affects the trajectory. For thi...

Solved • May 7, 2020

Projectile Motion: Positive Launch

#### Q. To understand how the trajectory of an object depends on its initial velocity, and to understand how air resistance affects the trajectory. For thi...

Solved • May 7, 2020

Projectile Motion: Positive Launch

#### Q. To understand how the trajectory of an object depends on its initial velocity, and to understand how air resistance affects the trajectory. For thi...

Solved • May 7, 2020

Projectile Motion: Positive Launch

#### Q. To understand how the trajectory of an object depends on its initial velocity, and to understand how air resistance affects the trajectory. For thi...

Solved • May 7, 2020

Projectile Motion: Positive Launch

#### Q. To understand how the trajectory of an object depends on its initial velocity, and to understand how air resistance affects the trajectory. For thi...

Solved • May 7, 2020

Projectile Motion: Positive Launch

#### Q. To understand how the trajectory of an object depends on its initial velocity, and to understand how air resistance affects the trajectory. For thi...

Solved • May 6, 2020

Projectile Motion: Positive Launch

#### Q. To understand how the trajectory of an object depends on its initial velocity, and to understand how air resistance affects the trajectory. For thi...

Solved • May 6, 2020

Projectile Motion: Positive Launch

#### Q. To understand how the trajectory of an object depends on its initial velocity, and to understand how air resistance affects the trajectory. For thi...

Solved • May 6, 2020

Projectile Motion: Positive Launch

#### Q. A cannon tilted up at a 26° angle fires a cannonball at 71m/s from atop a 12m -high fortress wall.What is the ball's impact speed on the ground below?

Solved • Apr 30, 2020

Projectile Motion: Positive Launch

#### Q. Rank these throws based on the maximum height reached by the ball.Rank from largest to smallest. To rank items as equivalent, overlap them.

Solved • Apr 9, 2020

Projectile Motion: Positive Launch

#### Q. A golfer tees off from the top of a rise, giving the golf ball an initial velocity of 43.0 m/s at an angle of 30.0° above the horizontal. The ball ...

Solved • Nov 6, 2019

Projectile Motion: Positive Launch

#### Q. In the figure, a stone is projected at a cliff of height  h with an initial speed of 42.0 m/s directed at angle θ0 = 60.0° above the horizontal. Th...

Solved • Nov 6, 2019

Projectile Motion: Positive Launch

#### Q. A child runs down a 12° hill and then suddenly jumps upward at a 15° angle above horizontal and lands 1.4 m down the hill as measured along the hil...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. A basketball is shot from an initial height of 2.4 m with an initial speed v0 =12 m/s directed at an angle 0 = 35 above the horizontal.How far fr...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. A batter hits a fly ball which leaves the bat 0.95 m above the ground at an angle of 61° with an initial speed of 30 m/s heading toward centerfield...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. Romeo is chucking pebbles gently up to Juliets window, and he wants the pebbles to hit the window with only a horizontal component of velocity. He ...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. Apollo astronauts took a "nine iron" to the Moon and hit a golf ball about 180  m. Assuming that the swing, launch angle, and so on, were the same ...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. A hunter aims directly at a target (on the same level) 73.0 m away.If the bullet leaves the gun at a speed of 180 m/s , by how much will it miss t...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. When Babe Ruth hit a homer over the 8.5 m -high right-field fence 98 m from home plate, roughly what was the minimum speed of the ball when it lef...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. A projectile is fired with an initial speed of 46.6 m/s at an angle of 42.2° above the horizontal on a long flat firing range. Determine:(a) the ma...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. An athlete executing a long jump leaves the ground at a 28.0 o angle and lands 7.70 m away.What was the takeoff speed?If this speed were increase...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. A long jumper leaves the ground at 45 above the horizontal and lands 9.1 v0 away. What is her "takeoff" speed v_0?Will she land on the opposite b...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. A high diver leaves the end of a 5.5 m high diving board and strikes the water 1.4 s later, 3.0 m beyond the end of the board. Considering the dive...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. A projectile is shot from the edge of a cliff 115 m above ground level with an initial speed of 65.0 m/s at an angle of 35.0° with the horizontal, ...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. A stunt driver wants to make his car jump over 8 cars parked side by side below a horizontal ramp (Fig. 3-46).(a) With what minimum speed must he d...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. Estimate how much farther a person can jump on the Moon as compared to the Earth if the takeoff speed and angle are the same. The acceleration due ...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. A fire hose held near the ground shoots water at a speed of 6.5 m/s .At what angle(s) should the nozzle point in order that the water land 2.5 m ...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. A football is kicked at ground level with a speed of 18.0 m/s at an angle of 36.0 to the horizontal.How much later does it hit the ground?

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. A shot-putter throws the shot ( mass = 7.3 kg) with an initial speed of 15.0 m/s at a 35.0 angle to the horizontal.Calculate the horizontal dist...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. You buy a plastic dart gun, and being a clever physics student you decide to do a quick calculation to find its maximum horizontal range. You shoot...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. A baseball is hit with a speed of 29.0 m/s at an angle of 46.0 . It lands on the flat roof of a 13.0 m -tall nearby building.If the ball was hit ...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. A grasshopper hops down a level road. On each hop, the grasshopper launches itself at angle exttip{ heta_{0}}{theta_0} = 50 and achieves a range...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. Two cannonballs, A and B, are fired from the ground with identical initial speeds, but with A larger than B, and | 45 - B | &amp;gt; | 45 - A |.W...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. A projectile is launched at an upward angle of 30 to the horizontal with a speed of 30 { m m/s}.How does the horizontal component of its velocity...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. A major leaguer hits a baseball so that it leaves the bat at a speed of 30.6 m/s and at an angle of 36.3 above the horizontal. You can ign...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. In a carnival booth, you win a stuffed giraffe if you toss a quarter into a small dish. The dish is on a shelf above the point where the quarter le...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. A test rocket starting from rest at point A is launched by accelerating it along a 200.0-m incline at 1.80 m/s2 . The incline ris...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. In Canadian football, after a touchdown the team has the opportunity to earn one more point by kicking the ball over the bar between the goal posts...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. On level ground a shell is fired with an initial velocity of 41.0 m/s at 61.0 above the horizontal and feels no appreciable air re...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. Romeo tosses a pebble at Juliets window to wake her. Unfortunately, he throws too large a pebble too fast. Just before crashing through the glass, ...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. A pistol that fires a signal flare gives the flare an initial speed (muzzle speed) of 126 m/s.(a) If the flare is fired at an angle of 55.0° above ...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. In a Fourth of July celebration, a firecracker is launched from ground level with an initial velocity of 25.1 m/s at 30.1 from the vertical. At i...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. In the long jump, an athlete launches herself at an angle above the ground and lands at the same height, trying to travel the greatest horizontal d...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. A demolition crew uses dynamite to blow an old building apart. Debris from the explosion flies off in all directions, and is later found at distanc...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. In the middle of the night you are standing a horizontal distance of 14.0 m from the high fence that surrounds the estate of your rich uncle. Th...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. A firefighting crew uses a water cannon that shoots water at 28.0 m/s at a fixed angle of 50.0 above the horizontal. The firefighters want to dir...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. A baseball thrown at an angle of 60.0° above the horizontal strikes a building 18.0 m away at a point 8.00 m above the point from which it is throw...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. A grasshopper leaps into the air from the edge of a vertical cliff, as shown in the figure below.Use information from the figure to find the initia...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. A physics professor did daredevil stunts in his spare time. His last stunt was an attempt to jump across a river on a motorcycle. The takeoff ramp ...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. A 2.7-kg ball is thrown upward with an initial speed of 20.0 m/s from the edge of a 45.0-m-high cliff. At the instant the ball is thrown, a woman s...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. A cannon, located 60.0 m from the base of a vertical 25.0-m-tall cliff, shoots a 15-kg shell at 43.0 above the horizontal toward the cliff.  What m...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. As a ship is approaching the dock at 45.0 cm/s, an important piece of landing equipment needs to be thrown to it before it can dock. This equipmen...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. According to the Guinness Book of World Records, the longest home run ever measured was hit by Roy “Dizzy” Carlyle in a minor league game. The ball...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. A man stands on the roof of a building of height 15.1 m and throws a rock with a velocity of magnitude 30.1 m/s at an angle of 30.1 above the ho...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. Firemen are shooting a stream of water at a burning building using a high-pressure hose that shoots out the water with a speed of 25.0 m/s as it le...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. A rookie quarterback throws a football with an initial upward velocity component of 16.1 m/s and a horizontal velocity component of 20.1 m/s . Ign...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. The froghopper, Philaenus spumarius, holds the world record for insect jumps. When leaping at an angle of 58.0° above the horizontal, some of the t...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. A shot putter releases the shot some distance above the level ground with a velocity of 12.0 m/s, 51.0 above the horizontal. The shot hits the grou...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. According to the Guinness Book of World Records, the longest home run ever measured was hit by Roy “Dizzy” Carlyle in a minor league game. The ball...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. A skateboarder starts up a 1.0-m-high, 30° ramp at a speed of 7.1 m/s. The skateboard wheels roll without friction. At the top, she leaves the ramp...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. For a projectile, which of the following quantities are constant during the flight?Which of these quantities are zero throughout the flight?

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. In the Olympic shotput event, an athlete throws the shot with an initial speed of 13.0 m/s at a 44.0 angle from the horizontal. Th...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. An archer standing on a 15° slope shoots an arrow 20°^circ above the horizontal, as shown in the figure. How far down the slope does the arrow hit ...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. A rubber ball is dropped onto a ramp that is tilted at 20 , as shown in the figure . A bouncing ball obeys the "law of reflection," which says t...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. On the Apollo 14 mission to the moon, astronaut Alan Shepard hit a golf ball with a 6 iron. The acceleration due to gravity on the moon is 1/6 of i...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. A ball is thrown toward a cliff of height h with a speed of 31 m/s and an angle of 60 above horizontal. It lands on the edge of the cliff 3.6 (Pa...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. A stunt man drives a car at a speed of 20 m/s off a 28-m-high cliff. The road leading to the cliff is inclined upward at an angle of 20.How far fro...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. A javelin thrower standing at rest holds the center of the javelin behind her head, then accelerates it through a distance of 70 cm as she throws. ...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. A gray kangaroo can bound across level ground with each jump carrying it 9.1 m from the takeoff point. Typically the kangaroo leaves the ground at...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. A tennis player hits a ball 2.0 m above the ground. The ball leaves his racquet with a speed of 21.0 m/s at an angle 5.1 above the horizontal. Th...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. You're 6.0 m from one wall of a house. You want to toss a ball to your friend who is 6.0 m from the opposite wall. The throw and catch each occur 1...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. A physics student on Planet Exidor throws a ball, and it follows the parabolic trajectory shown in the figure . The balls position is shown at 1s i...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. You are target shooting using a toy gun that fires a small ball at a speed of 15 m/s. When the gun is fired at an angle of 30° above horizontal, th...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. A projectile is launched from ground level at angle 0 and speed a into a headwind that causes a constant horizontal acceleration of magnitude a opp...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. A 35 g steel ball is held by a ceiling-mounted electromagnet 3.6 m above the floor. A compressed-air cannon sits on the floor, 4.6 m...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. The record distance in the sport of throwing cowpats is 81.1 m. This record toss was set by Steve Urner of the United States in 1981. Assuming the ...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. A boy stands on a diving board and tosses a stone into a swimming pool. The stone is thrown from a height of 2.50 m above the water surface with a ...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. A home run is hit in such a way that the baseball just clears a wall 21.0 m high, located 130 m from home plate. The ball is hit at an angle of 35....

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. A firefighter a distance d from a burning building directs a stream of water from a fire hose at angle ui above the horizontal as shown in Figure P...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. A placekicker must kick a football from a point 36.0 m (about 40 yards) from the goal. Half the crowd hopes the ball will clear the crossbar which ...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. A basketball star covers 2.80 m horizontally in a jump to dunk the ball (Fig. P4.24a). His motion through space can be modeled precisely as that of...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. A playground is on the flat roof of a city school 6.00 m above the street below (Fig. P4.25). The vertical wall of the building is h 5 7.00 m high ...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. A projectile is fired from the top of a cliff of height h above the ocean below. The projectile is fired at an angle u above the horizontal and wit...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. Mayan kings and many school sports teams are named for the puma cougar or mountain lionΓÇöFelis concolorΓÇö the best jumper among animals. It can j...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. An astronaut on a strange planet finds that she can jump a maximum horizontal distance of 15.0 m if her initial speed is 3.00 m/s. What is the free...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. A projectile is fired in such a way that its horizontal range is equal to three times its maximum height. What is the angle of projection?

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. To start an avalanche on a mountain slope an artillery shell is fired with an initial velocity of 300 m/s at 55.0° above the horizontal. It explode...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. A rock is thrown upward from level ground in such a way that the maximum height of its flight is equal to its horizontal range R. (a) At what angle...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. The speed of a projectile when it reaches its maximum height is one-half its speed when it is at half its maximum height. What is the initial proje...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. An astronaut hits a golf ball on the Moon. Which of the following quantities if any remain constant as a ball travels through the vacuum there? (a)...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. A projectile is launched on the Earth with a certain initial velocity and moves without air resistance. Another projectile is launched with the sam...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. A baseball is thrown from the outfield toward the catcher. When the ball reaches its highest point which statement is true? (a) Its velocity and it...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. In which of the following situations is the moving object appropriately modeled as a projectile? Choose all correct answers. (a) A shoe is tossed i...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. A catapult launches a rocket at an angle of 53.0° above the horizontal with an initial speed of 100 m/s. The rocket engine immediately starts a bur...

Solved • Oct 29, 2018

Projectile Motion: Positive Launch

#### Q. A basketball player is standing on the floor 10.0 m from the basket as in Figure P4.60. The height of the basket is 3.05 m and he shoots the ball a...

Solved • Oct 29, 2018