Physics Practice Problems Projectile Motion: Positive Launch Practice Problems Solution: A rock is thrown upward from level ground in such ...

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# Solution: 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 u is the rock thrown? (b) In terms of its original range R what is the range Rmax the rock can attain if it is launched at the same speed but at the optimal angle for maximum range? (c) What If? Would your answer to part (a) be different if the rock is thrown with the same speed on a different planet? Explain.

###### Problem

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 u is the rock thrown? (b) In terms of its original range R what is the range Rmax the rock can attain if it is launched at the same speed but at the optimal angle for maximum range? (c) What If? Would your answer to part (a) be different if the rock is thrown with the same speed on a different planet? Explain.

Projectile Motion: Positive Launch

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 • Mon Oct 29 2018 16:36:18 GMT-0400 (EDT)

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 explodes o...

Solved • Mon Oct 29 2018 16:36:18 GMT-0400 (EDT)

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 projecti...

Solved • Mon Oct 29 2018 16:36:18 GMT-0400 (EDT)

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) sp...

Solved • Mon Oct 29 2018 16:36:17 GMT-0400 (EDT)