A ball of mass 100 g is moving with a velocity of 3 m/s towards east. – McqOptions

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1.	A ball of mass 100 g is moving with a velocity of 3 m/s towards east. A cube of mass 200 gram is moving towards west with a velocity of 7 m/s. If the collision is perfectly elastic, what is the final velocity of the ball in m/s?
A.	7
B.	5
C.	31/3
D.	11/3
Answer» D. 11/3

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