An object A of mass `1 kg` is projected vertically upward with a speed of `20 m//s`. At the same
Channel: Doubtnut
Date: 28/01/2020

An object A of mass `1 kg` is projected vertically upward with a speed of `20 m//s`. At the same moment another object B of mass `3 kg`, which in intially above the object A, is dropped from a height `h = 20 m`. The two point like objects (A and B) collision and stick to each other. The kinetic energy is K (in J) of the combined mass after collision, find the value of `K//25`.