Question

How much kinetic energy does a roller coaster have if its mass is 3000 kg and is moving at 30 m/s

Answer 1

The Kinetic energy of an object is given by:

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

Where m is the mass of the object (kg) and v is the velocity of the object (ms-1)

Substituting in:

`E_k= (1)/(2)*3000*30^2 = 1350000J`
Therefore the Kinetic energy of the object is 1.35MJ