Question

Define Kinetic Energy. Write expression for Kinetic Energy.A force of 12N acts on an

object of mass of 4kg in the state of rest for 3s. Calculate the kinetic energy acquired by the

object.​

Answer 1

The kinetic energy of an object is the energy that it possesses due to its motion.

Let m be the mass of an object and v be the velocity of an object

So, Kinetic energy of the object ,

K= 1/2 mv^2

We know that K= 1/2mv^2

K= 1/2* 4 * 3

K= 6.