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13. A 500kg boat has an initial speed of 10ms asit passes under a bridge. At that instant a 50 kgman jumps straight down into the boat from thebridge. The speed of the boat after the man andboat attain a common speed is100 |
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Answer» Dear STUDENT, ◆ Answer - v = 100/11 m/s ● EXPLAINATION - # GIVEN - M = 500 kg m = 50 kg u = 10 m/s # Solution - According to law of conservation of MOMENTUM, Pi = Pf Mu = (M+m)v 500 × 10 = (500+50) × v v = 5000 / 550 v = 100/11 m/s v = 9.09 m/s Therefore, speed of the boat after man jumps into it is 100/11 m/s. Thanks dear... |
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