Question

Doubling speed does what to kinetic energy?

It stays the same
The final kinetic energy is double the initial kinetic energy
The final kinetic energy is 4 times the initial kinetic energy
The final kinetic energy is half the initial kinetic energy

Answer 1

The final kinetic energy is 4 times the initial kinetic energy

Step-by-step explanation:

Answer 2

Final K.E. is four times initial KE

Step-by-step explanation:

K. E. = 1/2 mv ^2 now double the speed

new K.E. = 1/2 m (2v)^2

= 1/2 m 4 v^2

= 4 * 1/2 m v^2