Question

if the speed of the car is reduced to half the kinetic energy becomes how much?​

Answer 1

Answer:

1/4

Step-by-step explanation:

Kinetic energy of the body   K.E=1/2mv2

So,   K.E∝v2

If speed of the body is halved, its kinetic energyis reduced by a factor of 4.

Answer 2

Answer:

Kinectic energy is directly proportional to the square of speed of a body. So if speed is halved, kinetic energy becomes 1/4th of the original.