Question

A bullet is fired into a wall with a velocity of 50 m/s. If the bullet stops at a depth of 10 cm
inside the wall, find the retardation provided by the wall.

Answer 1

Given,

Initial velocity u = 50 m/s

Final velocity v = 0

Distance s = 10 cm 

= 0.1 m

We know that,

v² = u² + 2as

a = -u² / 2s

a = -2500 / (0.2)

a = -12500 m/s²

So, retardation = 12500 m/s² Ans.

Answer 2

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