Question

Given that the kinetic energy of an object is $100J$. If the mass of an object is $2kg$ then find its speed.

Answer 1

Step 1: Given data

Mass of the object = $2kg$

Kinetic energy of the object = $100J$

Step 2: Finding the speed

Kinetic energy K.E = $\frac{1}{2}m{v}^2$

$\Rightarrow 100=\frac{1}{2}\times 2\times v^2$

$\Rightarrow v^2=100$

$\Rightarrow v=10\raisebox{1ex}{$m$}\!\left/ \!\raisebox{-1ex}{$s$}\right.$

Therefore, the velocity of the object is $10\raisebox{1ex}{$m$}\!\left/ \!\raisebox{-1ex}{$s$}\right.$