Question

A car has a mass of 1200 kg and is travelling at 20 m/s. Calculate its kinetic energy.

Answer 1

`\huge{ \boxed{240000 \: J}}`

Step-by-step explanation:

The kinetic energy of the car can be found by using the formula:

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

where:

m is the mass in kg

v is the velocity in m/s

From the question:

m = 1200 kg

v = 20 m/s

`\therefore \: KE = (1)/(2) * 1200 * {20}^(2) \\ = 600 * 400 \\ = 240000`