Chapter 8, Problem 25A

Calculate the momentum of a 50-kg carton that slides at 4 m/s across an icy surface.

$\text{Impulse}=Ft$

To determine

Themomentum of a carton of given mass moving with a particular velocity.

Answer to Problem 25A

The momentum of the carton is $200\text{kg}-\text{m/s}$

Explanation of Solution

Given:

A carton of mass 50-kg slides across an icy surface at a speed of 4 m/s.

Formula used:

The momentum of a body represents its inertia while in motion. It can be expressed as the product of mass and velocity of the body ,

  $\text{Momentum}=mv$

Calculation:

Here, speed or velocity of the carton is 4 m/s and mass of the carton is 50-kg. Thus, the momentum is given by,

  $\begin{array}{c}\text{Momentum }=\text{50}\times \text{4}\\ =\text{200 kg-m/s }\end{array}$

Conclusion :

The momentum of a carton of given mass moving with a particular velocity is $200\text{kg}-\text{m/s}$ .