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A ball is thrown vertically upwards from...

A ball is thrown vertically upwards from the ground. Work done by air resistance during its time of flight is

A

positive during ascent and negative during descent

B

positive during ascent and descent

C

negative during ascent and positive during descent

D

negative during ascent and descent

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The correct Answer is:
D
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NARAYNA-WORK POWER AND ENERGY-C.U.Q-Key
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  5. Work done by force of static friction .

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  7. Which of the following forces is called a conservative force ?

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  8. Identify the non-conservative force in the following

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  12. When the momentum of a body a doubled, the kinetic energy is

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  18. Consider the following two statements: A. Linear momentum of a syste...

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