Question

A bullet of mass 5gm is fired from a pistol of 2kg. If the recoil velocity of the pistol is 2ms-1, find the velocity of the bullet.​

Answer 1

Answer:

Solution

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Correct option is

D

500m/s

Conservation of linear momentum gives,

m

1

v

1

+m

2

v

2

=0

m

1

v

1

=−m

2

v

2

v

1

=

m

1

−m

2

v

2

Given, m

1

=10g=(

1000

10

)kg,

m

2

=1 kg,

v

2

=−5m/s

∴v

1

=

10/1000

+1×5

or v

1

=500m/s.

hope its help you