Question

If velocity of an object becomes double then its kinetic energy becomes how much?
(a) One fourth
(b) Half
(c) Double
(d) Four times

Answer 1

Answer:d.four times

Explanation:

Answer 2

If velocity of an object becomes double then its kinetic energy becomes four times.

The kinetic energy of an object is given by the equation K.E. = ½ * m * v^2.

Example:

Let us assume that the mass of the object is 2kg and velocity is 2m/s.

Then the kinetic energy is calculated as K.E. = ½ * 2 *2^2 = 4 Joules. (1/2 * 2 * 4)

Now, if the velocity is doubled:

The mass of the object is 2kg and velocity is 4m/s.

Then the kinetic energy is calculated as K.E. = ½ * 2 *4^4 = 16 Joules. (1/2 * 2 * 16)