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Sahay Sir > Question Answers > JEE Mains Physics 2002-2019 Solved Video Solutions > Chapter 4 - Work, Energy and Power > A mass ‘m’ moves with a velocity ‘v’ and collides inelastically with another identical mass . After collision the 1st mass moves with velocity v/3–√ in a direction perpendicular to the initial direction of motion. Find the speed of the 2nd mass after collision.

A mass ‘m’ moves with a velocity ‘v’ and collides inelastically with another identical mass . After collision the 1st mass moves with velocity v/3–√ in a direction perpendicular to the initial direction of motion. Find the speed of the 2nd mass after collision.

A force acts on a 2 kg object so that its position is given as a function of time as x=3t^2+5. What is the work done by this force in first 5 seconds ?