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A 5 kg body is fired vertically up with ...

A 5 kg body is fired vertically up with a speed of 200 m/s. Just before it hits the ground, its speed is 150 m/s. Over the entire trip,

A

Change in internal energy of the projectile and air is `-43750 J.`

B

The work done by gravity is 44000 J

C

The work done by gravity is zero

D

The time of upward motion is less than that for downward motion

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A, C, D
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AAKASH INSTITUTE-WORK, ENERGY AND POWER-SECTION-C (OBJECTIVE TYPE QUESTIONS) (MORE THAN ONE OPTIONS ARE CORRECT)
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