Question

A ball of mass 200 g rolls along the ground at a speed of 5.2 m/s. Calculate the kinetic energy of the ball


​

Answer 1

The kinetic energy of the ball is 2.704 kgm^-2s-2.

Given: Mass of the ball= 200g

Velocity= 5.2m/s

To find: the Kinetic energy of the ball.

Solution:

Kinetic energy is a form of energy that is present in an object which helps the object to move when force is applied.

mass of the ball= 200g= 0.2kg

Kinetic energy=

$\frac{1}{2}m {v}^{2}$

$= \frac{1}{2} \times 0.2 \times ({5.2})^{2}$

= 0.1× 27.04

= 2.704 kgm^-2s-2

Therefore, the kinetic energy of the ball is 2.704 kgm^-2s-2.