Question

An object of mass 100 kg is accelerated uniformly from a velocity of 5 m/s to 8 m/s in 6 s.c calculate the initial and final momentum of the object . Also ,find the magnitude of the force exerted on the object

Answer 1

• Given :

=> mass = 100 kg

=> initial velocity u = 5m/s

=> final velocity v = 8m/s

=> change in time = dt = 6s

• To find :

=> initial momentum Pi = ?

=> final momentum Pf = ?

=> Force F = ?

• Formula :

=> Momentum = mv

=> Force = change in momentum / dt

=> F = dP/dt

• Calculation :

=> Pi = 100 * 5 = 500 kg*m/s

=> Pf = 100 * 8 = 800 kg*m/s

=> dP = Pf - Pi = 800 - 500 = 300 kg*m/s

=> F = dP/dt = 300/6 = 50 N

=> Hope it helps u...pls, mark me as brainliest...i need only two brainliest answer for rank up....