a person in a kayak starts paddling, and it accelerates from 0 to 0.36 m/sec in a distance of 0.8m if the combined mass of the person and the kayak is 80 kg,what is the magnitude of net force acting on the kayak...??
average velocity is ... (.36 + 0) / 2
t = d / v = .8 m / .18 m/s
acceleration ... a = .36 m/s / t
f = 80 kg * a