Various forces on various objects

[Doc Al]

Just like when you were given that all the distances were the same and asked about the change in energy, there is an equally simple way to rank order the change in momentum when the times are all the same. Consider the impulse.

 

[Just_enough]

Just like when you were given that all the distances were the same and asked about the change in energy, there is an equally simple way to rank order the change in momentum when the times are all the same. Consider the impulse.

the difference in velocity? 3/4 objs have the same acceleration, so they end up with with the same velocity...

 

[haruspex]

no, you're looking at the original list instead of the new list I posted #16. (a) C < B < D < A (b) C < A=B < D (c) B=C < D < A (d) C < B=D < A (e) A < C < D < B

In that case I agree with you: it is c but with the inequalities reversed.

 

[Doc Al]

the difference in velocity? 3/4 objs have the same acceleration, so they end up with with the same velocity...

But they have different masses.

But the same impulse gives the same change in momentum. (And if the times are all the same...)