39.Calculate the recoil velocity of a 5-kg rifle that shoots a 0.02-kg bullet at a speed of 620 (m\
問題詳情
39.tCalculate the recoil velocity of a 5-kg rifle that shoots a 0.02-kg bullet at a speed of 620 (m/s). (A)-10 m/s (B) -5 m/s (C) -2.5 m/s (D) -1,25 m/s (E) -1 m/s