Applied Mechanics and Graphic Statics
Newton's law of Collision of elastic bodies states that when two moving bodies collide each other, their velocity of separation

Is inversely proportional to their velocity of approach
Bears a constant ratio to their velocity of approach
Is directly proportional to their velocity of approach
Is equal to the sum of their velocities of approach

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Applied Mechanics and Graphic Statics
A sphere and a cylinder having the same mass and radii start from rest and roll down the same inclined plane. Which body gets to the bottom first?

Both reach the bottom simultaneously with equal rotational energy at bottom
Cylinder with greater rotational energy at bottom than sphere
Sphere with lesser rotational energy at bottom than cylinder
Sphere with greater rotational energy at bottom than cylinder

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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

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

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