1.

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»

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.



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