A railway coach of mass 8000 kg moving with speed of 54 ms^(-1)collide with rest coach of same like . Find the decrease in kinetic energy in this process.

A railway coach of mass 8000 kg moving with speed of 54 ms^(-1)collide

1.	A railway coach of mass 8000 kg moving with speed of 54 ms^(-1)collide with rest coach of same like . Find the decrease in kinetic energy in this process.
Answer» Solution :Hint use of the FORMULA of : DECREASES in KINETIC ENERGY = `(m_(1)m_(2)v_(li))/(2(m_(1)+m_(2))`