A bullet loses one-third of its velocity on penetrating 5 cm in a wooden black. How much will it penetrate more in the wooden block before coming to rest?
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Explanation:
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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