Question

Stone having a mass of 50 kg falling from a height how much kinetic energy does it have at the moment when its velocity is 10 metre per

Answer 1

Given:

Mass of stone = 50 kg

Velocity of stone = 10 m/s.

To find:

Kinetic energy of stone ?

Calculation:

• Kinetic Energy is a type of MECHANICAL ENERGY that is present in an object by the virtue of its motion.

• Let kinetic energy be KE :

$KE = \dfrac{1}{2} m {v}^{2}$

$\implies KE = \dfrac{1}{2} \times 50 \times {(10)}^{2}$

$\implies KE = \dfrac{1}{2} \times 50 \times100$

$\implies KE = 2500 \: Joules$

So, kinetic energy of the stone is 2500 Joules