Question

on penetrating 1 centimetre of a wooden block a bullet losses half of its velocity. how far Would it penetrate before it comes to rest?

Answer 1

Answer:

Its velocity becomes u/2 after penetrating 3 cm in the block. We can calculate the deceleration of the body using these. Now, we can calculate the distance the body travels till it comes to rest. Therefore, the body penetrates 1 cm (4-3=1cm) more before coming to rest.