An object A of mass 2 kg is moving on a frictionless horizontal track has perfectly
Channel: Doubtnut
Date: 2020-04-12

An object A of mass 2 kg is moving on a frictionless horizontal track has perfectly inelastic collision with another object B of mass 3 kg made of the same material and moving in front of A in same direction their common speed after the collision is `4 m//s`  Due to the collision the temperature of the two objects which was initially the same, is increased though only by `0.006^(@)` C What was the initial speed `(in m//s)`  of the colliding object A before the collision?