Question

Two particles of masses mi and me
travelling alontwo particles of masses of m1 and M2 travelling along the same straight line with velocities v1 and v 2 collide with each other if the collision is head on elastic collision find their velocities after collision​g .?​

Answer 1

Explanation:

Consider m1 and m2 together as system. 

Gravitational force, (m1+m2)g, is the only external force acting on the system Apply Newton's second law,

∣∣∣∣Fext∣∣∣∣=(m1+m2)g=Δt∣Δp∣=2to−0∣∣∣∣(m1v1′+m2v2′)−(m1v1+m2v2)∣∣∣∣

So, we get