A man standing on very slick ice fires a rifle horizontally. The mass of the man together with the rifle is 70 kg , and the mass of the bullet is 10 g

If the bullet leaves the muzzle at a speed of 500 m/s, what is the final speed of the man?

4 answers

a formula if possible would be awesome
Conservation of momentum problem

since system is a rest before firing

0 = m1*v1 + m2*v2

everything is given in problem besides v1

So solve for v1
awesome thanks
-0.07