Applied Mechanics and Graphic Statics
Ball ‘A’ of mass 250 g moving on a smooth horizontal table with a velocity of 10 m/s hits an identical stationary ball ‘B’ on the table. If the impact is perfectly elastic, the velocity of the ball ‘B’ just after impact would be

5 m/sec
None of these
10 m/sec
Zero

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Applied Mechanics and Graphic Statics
A body is said to move with Simple Harmonic Motion if its acceleration, is

Always directed away from the centre, the point of reference
Inversely proportion to the distance from the point of reference
Proportional to the square of the distance from the point of reference
Proportional to the distance from the point of reference and directed towards it

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