Question

Calculate the kinetic energy of a 5.0kg object moving at 4.0 m/s

Answer 1

The answer is

40 J

Step-by-step explanation:

The kinetic energy of an object given it's mass and velocity can be found by using the formula

`KE = (1)/(2) m {v}^(2)`

where

m is the mass

v is the velocity

From the question

m = 5 kg

v = 4 m/s

The kinetic energy is

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

We have the final answer as

40 J

Hope this helps you