Object 1,which has a mass of 5 kg, is thrown at 10 m/s. Object 2 has a mass of 8 kg. With what speed should the second object be thrown for it to have the same momentum as Object 1?

My answer: 6.25 m/s

M1*V1 = M2*V2.

5*10 = 8*V2,
V2 = ?