Physics, 18.07.2020 02:01 allycoops666666

Negative work can be done (a) by friction on the tires 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.

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Negative work can be done (a) by friction on the tires while a car is accelerating without skidding....

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