The fixed boat, together with the hunter in it, has a mass of 250 kg. The hunter shoots his hunting rifle horizontally.

The fixed boat, together with the hunter in it, has a mass of 250 kg. The hunter shoots his hunting rifle horizontally. What speed will the boat get after the shot? the mass of the bullet is 8 grams, and its velocity at departure is 700m / s.

Given:
m = 250 kg;
m bullet = 8 g;
V = 700 m / s.
Find: V.
In order to solve the problem, you need to use the law of conservation of momentum. It looks like this:
mv = MV.
Let us express from it the velocity V, which we need to find.
V = mv / M.
Substitute all the values we know into the formula and get the answer.
First, you need to translate the mass of the bullet into a more convenient system of calculation, namely in kilograms. Then we get that m bullet = 8 g = 0.008 kg.
We substitute:
V = 0.008 * 700/250 = 0.0224 m / s.
Answer: 0, 0224