Question

an object of mass 200 kg is accelerated from a velocity of 10 M per second to 20 m per second in 2 seconds calculate the initial Momentum and the final Momentum and the force exerted on the object

Answer 1

m=200kg

u=10m/s

v=20m/s

a=v-u/t

a=20-10/2=10/2=5m/s^2

initial momentum=mu=200×10=2000kgm/s

final momentum=mv=200×20=4000kgm/s

force exerted=F=ma=200×5=1000N..

hope it helps..