Question

A bullet is moving at a speed of when it embeds into a lump of moist clay. The bullet penetrates for a distance of . Determine the acceleration of the bullet while moving into the clay. (Assume a uniform acceleration.)

A

B

 

C

 

D

 

Medium

Solution

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Correct option is
B

 

Here, initial velocity of bullet is and final velocity is .
Distance traveled by bullet is
If be the acceleration of bullet.
Using
(negative sign indicates deceleration of bullet means it slows down).

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