Question

He quantities which remains constant in a collision are :- (1) momentum, kinetic energy and temperature (2) momentum and kinetic energy only (3) momentum and temperature only (4) only momentum

Answer 1

4) only momentum.
and this is due to the law of conservation of momentum

HOPE IT HELPS YOU

Answer 2

OPTION 4) Only momentum .

REASON

↪ According to law of conservation of momentum , during a collision between two objects , the momentum of two objects remain constant only and there is a change in the temperature and kinetic energy of the body .

↪ The sum of initial momentum is equal to the sum of final momentum .

↪ The two bodies will collide and there will be friction during such collision which will result in the change in temperature of the body .

↪ The frictional force is formed on the surface and it does not allow the temperature of the body to remain constant .

↪ When the two bodies collide their kinetic energy also change . Their internal kinetic energy also changes .