Question

Find the speed of a 22 kg mass with a momentum of 450 kgm/s. (Round answers to 3 significant digits as usual in all answers)

Answer 1

We can find the speed of the mass from the definition of the linear momentum:

$$p=mv,$$ $$v=\dfrac{p}{m}=\dfrac{450\ \dfrac{kgm}{s}}{22\ kg}=20.5\ \dfrac{m}{s}.$$

Answer:

$v=20.5\ \dfrac{m}{s}.$