I need help with this question please, thank you.
Conservation of momentum
m1 v1 = m2 v2
5 *3 + 3 *2 = (5+3) v2
21/8 = v2 = 2.625 m/s
Kinetic energy = 1/2 mv^2 initially = 1/2 5000 (3^2) + 1/2 3000 (2^2 ) = 2,8500 kg m^/s^2
after = 1/2 8000 2.625^2 =27,562.5 Difference = 937.5 kg - m^2/s^2