Acar traveling at 60 mph has how much more energy than a car going at 20 mph? how many times does the kinetic energy of a car increase when traveling 60 mph as opposed to traveling 30 mph? k. e. increases times.

Explanation :

(a) Initial velocity, v₁ = 60 mph

Final velocity, v₂ = 20 mph

Let KE₁ and KE₂ are the initial and final kinetic energies.

So, the kinetic energy increases 9 times.

(b) Initial velocity, v₁ = 60 mph

Final velocity, v₂ = 30 mph

Let KE₁ and KE₂ are the initial and final kinetic energies.

So, the kinetic energy increases 4 times.

Hence, this is the required solution.