Applied Mechanics and Graphic Statics
Pick up the correct statement from the following. A rubber ball when strikes a wall rebounds but a lead ball of same mass and velocity when strikes the same wall, falls down

Rubber and lead balls undergo equal changes in momentum
None of these
Change in momentum suffered by lead ball is less that of rubber ball
Momentum of rubber ball is less than that of lead ball

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Applied Mechanics and Graphic Statics
Free body diagram is an

Isolated joint with all the forces, internal as well as external, acting on it
Isolated joint with only body forces acting on it
Isolated joint with internal forces acting on it
None of these

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