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A bullet of mass 50 gram moving with a velocity of 400 m/s strikes a wall and goes out from the other side with a velocity of 100 m/s. Calculate the work done in passing through the wall. |
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Answer» Work done W = KE2 – KE1 KE1 = 1/2m1v12 =4000 J KE2 = 1/2mv22 = 250 J Arriving at final answer W = KE2 – KE1 = 4000 – 250 = 3750 J |
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