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
Momentum of rubber ball is less than that of lead ball
Change in momentum suffered by lead ball is less that of rubber ball
None of these

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Applied Mechanics and Graphic Statics
Pick up the incorrect statement from the following. In a simple harmonic motion

Velocity is maximum at its mean position
Acceleration is minimum at the end of the stroke
Acceleration is zero at the mean position
Velocity is minimum at the end of the stroke

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