Question

A ball has a momentum of 35 kg·m/s. If the mass of the ball is 5.0 kg, what is the speed of the ball?

Answer 1

We can find the speed of the ball from the definition of the momentum:

$$p = mv,$$ $$v = \dfrac{p}{m} = \dfrac{35 kg \cdot \dfrac{m}{s}}{5kg} = 7 \dfrac{m}{s}.$$

Answer:

$v = 7 \dfrac{m}{s}.$