Positive work can be done:
A)by friction on the tyres when a car is accelerating without skidding.
B)by a spring when it launches a clown in the air.
C)by a hand throwing a ball.
D)by all of the above.
E)only by (b) and (c) above.

Question

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The Answer of Positive work can be done:
A)by friction on the tyres when a car is accelerating without skidding.
B)by a spring when it launches a clown in the air.
C)by a hand throwing a ball.
D)by all of the above.
E)only by (b) and (c) above.

Positive Work Can Be Done