Question

What is the kinetic energy of a body mass 5kgwhich moves with velocity of 4m/s​

Answer 1

The answer is 40 Joules

Step-by-step explanation:

The kinetic energy of a body can be found by using the formula

`KE = (1)/(2) {mv}^(2)`

where

m is the mass

v is the velocity

From the question

mass = 5 kg

velocity = 4 m/s

Substitute the values into the above formula and solve

We have

`KE = (1)/(2) * 5 * {4}^(2) \\ = (1)/(2) * 5 * 16 \\ = 5 * 8`

We have the final answer as

40 Joules

Hope this helps you