In which case is negative work done? - ProProfs Discuss
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In which case is negative work done?



A. The work done by Earth on a ball as the ball, which was initially at rest, falls 3.0 m down towards Earth.
B. A eastward force is applied to an eastward moving soccer ball that is already moving at a constant velocity to increase its speed in that direction.
C. A cart is moving at a constant velocity of 10 m/s [ when a 0.5 N [downwar force is applied.
D. The work done by Earth on an arrow as it is fired 200 m straight up into the air.
E. Earth applies a force on the Moon as the Moon travels one completion rotation in orbit around Earth.

This question is part of Quiz: Work, power and energy
Asked by Songj, Last updated: Jun 04, 2018

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songj

Songj

Answered on Mar 18, 2018

The work done by Earth on an arrow as it is fired 200 m straight up into the air.
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