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Two bodies having same mass 40 kg are mo...

Two bodies having same mass 40 kg are moving in opposite direction. One with a velocity of 10 m/s and the other will 7m/s. if they collide nd move as one body, the velocity of the combination is

A

10 m/s

B

7 m/s

C

3 m/s

D

1.5 m/s

Text Solution

Verified by Experts

The correct Answer is:
D
By the conservation of momentum
`40 xx 10 + (40) xx (-7) = 80 xx v rArr v= 1.5m//s`
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