Question

What is the KE of a 4500kg at a speed of 20 m/s?

Answer 1

900kJ

Step-by-step explanation:

The formula to find the kinetic energy is :

`E_k=(1)/(2) mv^(2)`

Here,

m ⇒ mass ⇒ 4500 kg

v ⇒ velocity ⇒ 20 m/s

Let us find it now.

`E_k=(1)/(2) mv^(2)`

`E_k=(1)/(2) *4500*20^(2)`

`E_k=(1)/(2) *1800000`

`E_k=900000J`

`E_k=900kJ`