Question

A car of mass 1000 kg travels at 12 m/s on a horizontal and the resistance to motion is 500 N. Find (a) its momentum.

Answer 1

Step 1: Given data

Mass of the car is, $m=1000kg$

Velocity is, $v=12m/s$

Resistance (force) is, $F=500N$

Step 2: Calculating momentum

Momentum is given as,

$p=mv$

where, $m$ is mass and $v$ is velocity.

Substituting the known values, we get,

$$\begin{gathered} p=1000kg\times 12m/s \\ p=12000 \\ p=1.2\times {10}^{4}Ns \end{gathered}$$

Therefore, momentum is $1.2\times {10}^{4}Ns$.