A 40 kg boy is running at a speed of 3.0 m/s, when he jumps on a stationary skateboard. If the system, consisting of the boy and the skateboard, begins to roll at a speed of 2.5 m/s, what is the mass of the skateboard?
1 Answer
Jan 20, 2017
8 kg
Explanation:
Momentum(P)=mass(m) times velocity(v)
The total momentum of a system will not change (P initial = P final), so momentum of this system is: