Q2 of 49 Page 11

Calculate the kinetic energy of a body of mass 2kg moving with a velocity of 0.1 metre per second.

The formula for calculation kinetic energy is:
Kinetic energy = mv2
Here, Mass, m = 2 kg
And, Velocity, v = 0.1m/s
So, putting these values in the above formula, we get:
Kinetic energy = x 2 x (0.1)2
= x 2 x 0.1 x 0.1
= 0.01J
Thus, the kinetic energy of the body is 0.01joule.

More from this chapter

All 49 →
1 The work done on a body moving in a circular path is zero. Justify. 3 When the speed of a moving object is doubled, what happens to its kinetic energy? 4 Which would have a greater effect on the kinetic energy of an object, doubling the mass or doubling the velocity? 5 If acceleration due to gravity is 10m/s2, what will be the potential energy of a body of mass 1kg kept at a height of 5m?