Ask a New Question

a 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 girl,s speed is _ m/s.

1 answer

The law of conservation of linear momentum
0 = m1•v1 - m2•v2,
v2 =30•1/25 = 1.2 m/s².

Ask a New Question or answer this question.

Similar Questions

1)Two balls having the same mass of 1 kg roll toward each other, each moving at the same speed of 1 m/s. What is the combinded
1. 1 answer
A 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
1. 2 answers
a 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 answers
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
1. 2 answers

more similar questions