Ch 03: 2D Motion (Projectile Motion)WorksheetSee all chapters
All Chapters
Ch 01: Units & Vectors
Ch 02: 1D Motion (Kinematics)
Ch 03: 2D Motion (Projectile Motion)
Ch 04: Intro to Forces (Dynamics)
Ch 05: Friction, Inclines, Systems
Ch 06: Centripetal Forces & Gravitation
Ch 07: Work & Energy
Ch 08: Conservation of Energy
Ch 09: Momentum & Impulse
Ch 10: Rotational Kinematics
Ch 11: Rotational Inertia & Energy
Ch 12: Torque & Rotational Dynamics
Ch 13: Rotational Equilibrium
Ch 14: Angular Momentum
Ch 15: Periodic Motion (NEW)
Ch 15: Periodic Motion (Oscillations)
Ch 16: Waves & Sound
Ch 17: Fluid Mechanics
Ch 18: Heat and Temperature
Ch 19: Kinetic Theory of Ideal Gasses
Ch 20: The First Law of Thermodynamics
Ch 21: The Second Law of Thermodynamics
Ch 22: Electric Force & Field; Gauss' Law
Ch 23: Electric Potential
Ch 24: Capacitors & Dielectrics
Ch 25: Resistors & DC Circuits
Ch 26: Magnetic Fields and Forces
Ch 27: Sources of Magnetic Field
Ch 28: Induction and Inductance
Ch 29: Alternating Current
Ch 30: Electromagnetic Waves
Ch 31: Geometric Optics
Ch 32: Wave Optics
Ch 34: Special Relativity
Ch 35: Particle-Wave Duality
Ch 36: Atomic Structure
Ch 37: Nuclear Physics
Ch 38: Quantum Mechanics

Solution:
A snowball rolls off a barn roof that slopes downward at an angle of 40°. The edge of the roof is 14.0 m above the ground, and the snowball has a speed of 7.00 m/s as it rolls off the roof. Ignore air resistance. Assume the coordinate origin is at the point on the roof where the snowball rolls off and that the positive x direction is to the right and the positive y direction is upwards. (a) How far from the edge of the barn does the snowball strike the ground if it doesn't strike anything else while falling? (b) Draw y-t graphs for the motion in part A. (c) Draw x-t graphs for the motion in part A. (d) Draw vx-t graphs for the motion in part A. (e) Draw vy-t graphs for the motion in part A. (f) A man 1.9 m tall is standing 4.0 m from the edge of the barn. Will he be hit by the snowball?

Solution: A snowball rolls off a barn roof that slopes downward at an angle of 40°. The edge of the roof is 14.0 m above the ground, and the snowball has a speed of 7.00 m/s { m m/s}as it rolls off the roof. Ig

Problem
A snowball rolls off a barn roof that slopes downward at an angle of 40°. The edge of the roof is 14.0 m above the ground, and the snowball has a speed of 7.00 m/s as it rolls off the roof. Ignore air resistance. Assume the coordinate origin is at the point on the roof where the snowball rolls off and that the positive x direction is to the right and the positive y direction is upwards.
(a) How far from the edge of the barn does the snowball strike the ground if it doesn't strike anything else while falling?
(b) Draw y-t graphs for the motion in part A.
(c) Draw x-t graphs for the motion in part A.
(d) Draw vx-t graphs for the motion in part A.
(e) Draw vy-t graphs for the motion in part A.
(f) A man 1.9 m tall is standing 4.0 m from the edge of the barn. Will he be hit by the snowball?