Jumping from a crouch. A cheerleader with mass m crouches from a standing position, lowering the center of mass 17 cm in the process. Then the cheerleader jumps vertically. The average force exerted on the floor during the jump is 2.10mg. What is the upward speed as the cheerleader passes through the standing position in leaving the floor? Number Units

Jumping from a crouch. A cheerleader with mass m crouches from a standing position, lowering the center of mass 17 cm in the process. Then the cheerleader jumps vertically. The average force exerted on the floor during the jump is 2.10mg. What is the upward speed as the cheerleader passes through the standing position in leaving the floor? Number Units

Name: Jumping from a crouch. A cheerleader with mass m crouches from a stan
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Description: Jumping from a crouch. A cheerleader with mass m crouches from a standing position, lowering the center of mass 17 cm in the process.Then the cheerleader jumps vertically. The average force exerted on the floor during the jump is 2.10mg. What is the

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 1OQ: You hold a slingshot at arms length, pull the light elastic band back to your chin, and release it...

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A ball of mass m = 1.80 kg is released from rest at a height h = 65.0 cm above a light vertical spring of force constant k as in Figure P5.64a. The ball strikes the top of the spring and compresses it a distance d = 9.00 cm as in Figure P5.64b. Neglecting any energy losses during the collision, find (a) the speed of the hall just as it touches the spring and (b) the force constant of the spring.
A ball of mass m = 1.80 kg is released from rest at a height h = 65.0 cm above a light vertical spring of force constant k as in Figure P5.64a. The ball strikes the top of the spring and compresses it a distance d = 9.00 cm as in Figure P5.64b. Neglecting any energy losses during the collision, find (a) the speed of the hall just as it touches the spring and (b) the force constant of the spring.
A bloc k, of mass m is dropped from the fourth Moor of an office building and hits the sidewalk below at speed v. From what floor should the block be dropped to double that impact speed? (a) the sixth floor (b) the eighth floor (c) the tenth floor (d) the twelfth floor (e) the sixteenth floor
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