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# It's about time(i ask another question) M1 momentum and Impulse watch

1. 2 balls A and B have mass 0.6kg and 0.9kg respectively. initially both are at rest, Ball A is given an impulse of 4.5Ns towards B
3a)Modelling the surface as a smooth horizontal plane, calculate the speed of A before it collides with B
b) After collision balls travel in opposite directions. Direction of A is reverse and moves at 1.5ms^-1. Find the speed of B after collision
c) following collision, B is brought to rest in 3 seconds as a result of a constant resistive force,R, applied directly opposite to its motion. Find the magnitude of R

TeeEm Zacken Student403
can someone check if i got question 3c right? if not can someone show me how to do it?
2. (Original post by Student403)
translated
3. Thanks lol

Careful

Your a is correct but there is no need to multiply your mass by g

F = M * A
F = 0.9 * 2 is fine. Remember your dimension is mass, not force in the "M" of "M * A"
4. (Original post by Student403)
Thanks lol

Careful

Your a is correct but there is no need to multiply your mass by g

F = M * A
F = 0.9 * 2 is fine. Remember your dimension is mass, not force in the "M" of "M * A"
oh ok thanks another thread coming soon
5. (Original post by thefatone)
oh ok thanks another thread coming soon

no problem

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