Question

Particle A has less mass than particle B. Both are pushed forward across a frictionless surface by equal forces for 1 s. Both start from rest. Which is true? A. A has more momentum. B. B has more momentum. C. A and B have the same momentum D. Not enough information.

Answer 1

Both will have the same momentum.

P = M v momentum

v = a t for uniform acceleration

P = M a t

But a = F / M

P = M (F / M) t = F t so both have the same momentum