Question

A force of 500N acts on a body of mass 10kg such that its velocity changes from vi to vf in 20s than the rate of change of momentum will be equal to A.500N B.50N C.250N D.200N

Answer 1

A. 500N

Step-by-step explanation:

Using Impulse Momentum Theorem

F = m * a --------- (1)

where a = Δv / t

Δv = change of velocity

t = time

F = 500N

m = 10kg

t = 20s

using equation 1

500 = 10 * Δv / 20

500 * 20

Δv = ------------- = 1000 m/s

10

check:

impulse = change of momentum

therefore, Ft = Δ(m*v)

10 (1000)

F = --------------

20

F = 500 N

Answer 2

i m not confirmed but i think answer is 250

Step-by-step explanation:

F=500N M=10KG t=20sec p=f*m/t p=500*10/20 p=250