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A body  of mass moves with velocity v and collides elastically with another body of mass m ( ) at rest , then the velocity of body of mass m is

a)

v

b)

2v

c)

v/2

d)

zero



Question ID - 51853 | SaraNextGen Top Answer

A body  of mass moves with velocity v and collides elastically with another body of mass m ( ) at rest , then the velocity of body of mass m is

a)

v

b)

2v

c)

v/2

d)

zero

1 Answer
127 votes
Answer Key / Explanation : (b) -

 

(b)

Total initial momentum=Total final momentum

Or 

Again kinetic energy is also conserved.

Or 

Dividing Eq.(ii)by Eq.(i), we get

Or  

As   M

127 votes


127