A car is moving at 36 miles per hour. The

Question

kinetic energy of that car is 5 × 105 J.
How much energy does the same car have
when it moves at 115 miles per hour?
Answer in units of J

Answer 1

KE2 = KE1 * (V2/V1)^2

KE1 = 5*10^5 J.
V1 = 36 mi/h
V2 = 115 mi/h
Solve for KE2.