- #1

- 133

- 0

http://tinyurl.com/249gz8

the answer is d

What i have done is

Centre of mass of velocity

=(m1*v1+m2*v2)/(m1+m2)

but I am not sure how does it leads to the result d....

can anybody help on this?

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- Thread starter jack1234
- Start date

- #1

- 133

- 0

http://tinyurl.com/249gz8

the answer is d

What i have done is

Centre of mass of velocity

=(m1*v1+m2*v2)/(m1+m2)

but I am not sure how does it leads to the result d....

can anybody help on this?

- #2

Doc Al

Mentor

- 45,093

- 1,398

And it works the other way as well. What if both masses had a speed of v2. Then the speed of the center of mass would be v2? But some of the total mass (m1) is moving slower, so what must happen to the speed of the center of mass?

- #3

- 133

- 0

I see, thanks for the help :)

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