two Object of masses 5 kg and 10 kg moving with a velocity of 20 m/s.After collision both the object stuck together. find out their final velocity.​

Answers 1

Explanation:

As there is no external non-conservative force on the system (both masses altogether) the linear momentum should

be conserved.

Thus we should have m

1

v

1

+m

2

v

2

=(m

1

+m

2

)V (inelastic collision)

V is the common velocity after the collision.

putting values we get 20(10)+5(0)=(20+5)V or V=8m/s

so the new KE will be K=

2

1

mV

2

=0.5×25×64=800Joule

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