Question

A 50kg boy is running with a speed of 3m/s amd jump into a 150 kg stationary raft on th river. At what distance will the boy and raft will come into rest if they decelerate at 1.5m/s^2?

Answer 1

Explanation:

50 +150=200

then apply conservation of momentum

50×3 =200v

v=3/4 m/a

apply v square - u square = 2as

- 9/16 =2 × - 1.5 ×s

s= 3/16m