Negative work can be done:
A)by friction on the tyres while a car is accelerating without skidding.
B)by a spring at the bottom of an elevator shaft when it stops a falling elevator.
C)by a hand catching a ball.
D)by all of the above.
E)only by (b) and (c) above.

Question

Quizplus · Accepted Answer

Negative work is done when the force applied is opposite to the direction of motion. In option (b), the spring applies an upward force while the elevator moves downward, and in option (c), the hand applies a force opposite to the ball's motion.

Negative Work Can Be Done