need help with a motion question?
A 70 kg fisherman is quietly fishing in a 40 kg dinghy at rest on a lake when suddenly he is attacked by a swarm of wasps. To escape, he leaps into the water and exerts a horizontal force of 140 N on the boat. If the force on the fisherman lasted for 0.50 secs, determine the initial speed attained by both the man and the boat.
impulse on the man=mv=f/t
70xv=140/0.05
v=40
impulse on dinghy =mu=f/t
40xu=140/0.05
u=70
Wooden Boat Restoration – Dinghy
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