Answer
Velocities differ with varying masses and object so you must use p=mv and then compare.
Work Step by Step
p(1) = (20 g)(1 m/s) = 20 gm/s
p(2) = (20 g)(2 m/s) = 40 gm/s
p(3) = (10 g)(2 m/s) = 20 gm/s
p(4) = (0 g)(1 m/s) = 10 gm/s
p(5) = (200 g)(0.1 m/s) = 20 gm/s
So, p(2) > p(1)=p(3)=p(5)>p(4)
