engineering recuitment ISRO Scientist Mechanical Mock Test Engineering Mechanics Kinematics and Kinetics Impulse and Momentum
A point mass having mass M is moving with a velocity V at an angle θ to the wall as shown in the figure. The mass undergoes a perfectly elastic collision with the smooth wall and rebounds. The total change (final minus initial) in the momentum of the mass is
1
-2MV cos θ ĵ
2
2MV sin θ ĵ
3
2MV cos θ ĵ
4
-2MV sin θ ĵ