Question

an object of mass of 100kgis accelerated uniformly from a velocity of 5m/s to 8m/​

Answer 1

Mass of object, m=100kg; initial velocity, u=5ms−1; final velocity, v=8ms−1; time, t=6s

Initial momentum =mu=100×5=500Ns

Final momentum =mv=100×8=800Ns

Force exerted on the object

F=tmv−mu=6800−500=6300=50N