Question

A body of mass 3 kg is moving with speed 8 mps the body strikes with an identical body in such a way

Answer 1

Explanation:

By momentum conservation in Y-direction.

mv1sin30−mv22sin30=0 

v1=v2

In X direction,

 mu1=mv1cos30+mv2cos30 

m×3=2mv1×23

 v1=v2=33=3

Answer 2

Answer:

Answer

By momentum conservation in Y-direction.

mv

1

sin30−mv

2

2sin30=0

v

1

=v

2

In X direction,

mu

1

=mv

1

cos30+mv

2

cos30

m×3=2mv

1

×

2

3

v

1

=v

2

=

3

3

=

3

.

.

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