Question

Give
your own example to explain the
effects of change of mass and change of
velocity on the kinetic energy of an object.​

Answer 1

This means that an object with twice the mass and equal speed will have twice the kinetic energy while an object with equal mass and twice the speed will have quadruple the kinetic energy.

Answer 2

Explanation:

Suppose a girl of 25 kg is running in the park with a velocity of 3m/s.

Her kinetic energy will be - 1/2 x 25 x 3m/s^2

                                             - 112.5 J

Now suppose a woman of 50 kg is running in the park with the same speed.

Her kinetic energy will be - 1/2 x 50 x 3m/s^2

                                             - 225 J

Thus, KE doubles as its mass doubles.

Now perhaps the girl of 25 kg is running at the speed of 6m/s

So her kinetic energy will be - 1/2 x 25 x 6m/s^2

                                                - 450 J

Thus KE quadruples( increases by a factor of 4 ) when its velocity doubles.

Thanks.