An 8.0 g bullet is fired from a gun at 120 m/s into a 2.0 kg block of wood sitting on a fence post. if the bullet hits the wood and remains in it, what is the speed of the block after the collision?
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Ответ:
Explanation:
As we know that bullet strike the block and fix in it
so here if bullet and box is taken as a system then there is no external force on it
so here the initial momentum of bullet and block must be equal to final momentum of bullet and block
so here we have
now we have
now from above equation we have
Ответ:
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Explanation: