Answered: careful of +/- signs!!)

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter7: Work, Energy, And Energy Resources

Section: Chapter Questions

Problem 8PE: Suppose the ski patrol lowers a rescue sled and victim, having a total mass of 90.0 kg, down a 60.0°...

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3.) You throw a 0.2 kg baseball straight up into the air with a velocity of 20 m/s upwards. Ignore air resistance, and assume the ball was thrown from
ground level (y=0m).

d. What is the work done by gravity on the ball on the way up? (be
careful of +/- signs!!)

e. What is the work done by gravity on the ball on the way down?

f. What is the total work done by gravity on the ball from when you
throw it until it returns to the ground?

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