Question

A car moving with a velocity of 20 meters/second has

Answer 1

Kinetic energy is the energy of an object in motion. It is expressed as the product of its mass and the square of its velocity. The opposite of this energy is called the potential energy, the energy of an object at rest. Calculations are as follows:

KE = mv^2
1.8x10^5 J = m(20 m/s)^2
m = 450 kg