Question

ball of mass 10 kg moving in a straight line with a velocity of 30 sec 30 metre per second and collides with another ball address of Mass 5kg and stick together find the combined velocity

Answer 1

Answer:

Let their velocities after the collision be v

1

and v

2

. As we know for elastic collision.

Relative velocity of approach = relative velocity of separation

10−4=v

2

−v

1

⇒6=v

2

−v

1

⇒v

1

=v

2

−6

Applying conservation of momentum,

10×10+5×4=10v

1

+5v

2

120=10v

1

+5v

2

120=10(v

2

−6)+5v

2

=15v

2

−60

15v

2

=180⇒v

2

=12cm/sec

v

1

=6cm/sec

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Answer 2

Answer:

Please mark the above answer as the brainliest!!