Question

determine the kinetic energy of a 1000-kg rollor coaster car that is moving with the speed of 20.0 m/s​

Answer 1

Given :

Mass of roller coaster, m = 1000 kg.

Speed with which roller coaster is moving, v = 20.0 m/s.

To Find :

The kinetic energy if roller coaster.

Solution :

We know, kinetic energy of any object of mass m and speed v is given by :

`K.E = (mv^2)/(2)\\\\K.E = (1000* 20^2)/(2)\ J\\\\K.E = 200000\ J\\\\K.E = 200\ kJ`

Therefore, the kinetic energy of roller coaster is 200 kJ.