A 40.0-kg projectile is fired at an angle of 30.0° above the horizontal with an initial speed of 1.30 x 102 m/s from the top of a cliff 134 m above level ground, where the ground is taken to be y - 0. (a) What is the initial total mechanical energy of the projectile? (b) Suppose the projectile is traveling 92.1 m/s at its maximum height of y = 310 m. How much work has been done on the projectile by air friction? (c) What is the speed of the projectile immediately before it hits the ground if air friction does one and a half times as much work on the projectile when it is going down as it did when it was going up? m/s

A 40.0-kg projectile is fired at an angle of 30.0° above the horizontal with an initial speed of 1.30 x 102 m/s from the top of a cliff 134 m above level ground, where the ground is taken to be y - 0. (a) What is the initial total mechanical energy of the projectile? (b) Suppose the projectile is traveling 92.1 m/s at its maximum height of y = 310 m. How much work has been done on the projectile by air friction? (c) What is the speed of the projectile immediately before it hits the ground if air friction does one and a half times as much work on the projectile when it is going down as it did when it was going up? m/s

Name: A 40.0-kg projectile is fired at an angle of 30.0° above the horizont
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Description: A 40.0-kg projectile is fired at an angle of 30.0° above the horizontal with an initial speed of 1.30 x 102 m/s from the top of a cliff 134 m above level ground, where the ground is taken to be y = 0.(a) What is the initial total mechanical energy o

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter7: Conservation Of Energy

Section: Chapter Questions

Problem 33P

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