Question

A reckless hunter is on a boat which is stationary in the middle of a lake.

They fire their gun horizontally 10 times. Each time they fire, a 12 g bullet leaves the gun at a speed of 410 m s−1.

What is the speed of the boat after they have have finished firing their gun if the total mass of the boat, hunter, and gun is 150 kg? (in m s−1 to 2 s.f)

Assume no drag forces from the water.

Answer 1

Answer

the speed of the boat after they have have finished firing 

Is

$V=\frac{mv}{M}\\=\frac{0.012*410}{150}\\=0.0328m/s$