Question

A body of mass $30kg$ has a momentum of $150\raisebox{1ex}{$kgm$}\!\left/ \!\raisebox{-1ex}{$s$}\right.$ . Find its velocity.

Answer 1

Step 1:- Given data:

$$\begin{gathered} m=30kg \\ p=150\raisebox{1ex}{$kgm$}\!\left/ \!\raisebox{-1ex}{$s$}\right. \end{gathered}$$

Step 2:- Formula

$$\begin{gathered} momentum=mass\times velocity \\ p=m\times v \end{gathered}$$

Step 3:- To calculate the velocity of the body

$$\begin{gathered} \Rightarrow p=m\times v \\ \Rightarrow 150=30\times v \\ \Rightarrow \frac{150}{30}=v \\ \Rightarrow v=5\raisebox{1ex}{$m$}\!\left/ \!\raisebox{-1ex}{$s$}\right. \end{gathered}$$

Hence, the velocity of the body is found to be $5\raisebox{1ex}{$m$}\!\left/ \!\raisebox{-1ex}{$s$}\right.$