posted by nini .
A bicycle of mass 14.6 kg and a rider of mass 50kg generate a net force of 12N.How fast are they going after 2.0 seconds?
m = 14.6 + 50 = 64.6 kg
F = 12
a = 12/64.6
distance = (1/2) a t^2 = (1/2) a (4)
assuming speed was zero at the beginning of the problem