Question

If a ball is rolling at a velocity of 1.5 m/sec and has a momentum of 10.0 kg·m/sec, what is the mass of the 

ball?

Answer 1

Momentum = (mass) x (speed)

10 kg-m/sec = (mass) x (1.5 m/s)

Divide each side by 1.5 m/s :

Mass = 10 kg-m/sec / 1.5 m/s = (6 and 2/3) kg