# 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 magnitude of the final momentum of the system in Kg-m/s?

Category: QuestionsA 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 magnitude of the final momentum of the system in Kg-m/s?
Editor">Editor Staff asked 1 year ago

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 magnitude of the final momentum of the system in Kg-m/s?

(a) 1700

(b) 1500

(c) 1300

(d) 1100

The question was asked during an online interview.

My doubt stems from Collision topic in chapter Work, Energy and Power of Physics – Class 11
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Editor">Editor Staff answered 1 year ago