A particle of mass m moving towards the east with speed v collides with another particle of the same mass and same speed v moving towards the north. If the two particles stick to each other, the new particle of mass 2m will have a speed of

A particle of mass m moving towards the east with speed v collides wit

1.	A particle of mass m moving towards the east with speed v collides with another particle of the same mass and same speed v moving towards the north. If the two particles stick to each other, the new particle of mass 2m will have a speed of
Answer» `v` `v/2` `v/(SQRT2)` `vsqrt(2)` Solution :It is a CASE of perfectly inelastic collision. According to law of CONSERVATION of linear momentum, we get `m^2 v^2 + m^2v^2 = (2 mV)^(2)` where V is the common VELOCITY after the collision. SOLVING , we get , `V = v/(sqrt2)`.