Question

(c) An object of mass100 kg is accelerated uniformly from a velocity of 5m/s to 8m/s in 6
seconds. Calculate;
(1) Find the magnitude of force exerted on the object​

Answer 1

Answer:

Here, m=100kg,u=5m/s,v=8m/s,t=6s

Initial momentum of object, p1=mu=100×5=500kgm/s

final momentum of object, p2=mv=100×8=800kgm/s

Force exerted, F=change in momentumtime taken=p2−p1t=800−5006=50N