m1v1 = m2v2
(30kg)(v1)=(25kg)(1.0m/s)
solve for v1
5a 30 kg girl and a 25 kg boy face each other on friction -free roller blades . the girl pushes the boy ,who moves away at a speed of 1.0 m/s . the girls speed is how many m/s /
2 answers
0.45