Question

A stable body of mass 4 m suddenly explodes into three parts. If two parts of mass m moves with velocity v perpendicularly, then find out the velocity of third part of mass 2 m. Find out also the increase in kinetic energy after explosion.

Answer 1

Given; m₁ = m₂ = m; v₁ = v₂ – v, m₃ = 2m; u₃ =?
P₁ = m₁V₁ = mv
P₂ = m₂v₂ = mv ,
P₃ = m₃v₃ = 2mv₃
As is given in the question that
\(\overrightarrow{p_{1}} \perp \overrightarrow{p_{2}}\)
∴ The resultant moment of these particles

Increase in kinetic energy,