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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​

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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