Question

find the velocity of a body of mass 2 kg having kind kinetic energy 100 Jule

Answer 1

putting the value of kinetic energy

Answer 2

GIVEN :
Mass of body = 2 kg
Kinetic energy = 100 J

TO FIND :
Velocity of body = ?

SOLUTION :

Kinetic energy =
$kinetic \: energy \: = \frac{1}{2}m {v}^{2} \\ 100 = \frac{1}{2} \times 2 \times {v}^{2} \\ 100 \times 2 = 2 \times {v}^{2} \\ \frac{100 \times 2}{2} = {v}^{2} \\ 100 = {v}^{2} \\ 10 = v$