A car is moving at 50 miles per hour. The kinetic energy of that car is 5 × 105 J.

Question

How much energy does the same car have when it moves at 114 miles per hour?
Answer in units of J

Answer 1

Kinetic energy is proportional to mass and also varies with the square of the velocity.
So the new kinetic energy
=(5*10⁵ joules)*(114/50)²

Answer 2

2599200