Question

A 1,000-kg vehicle traveling 4 m/s eastward collided with another vehicle, at which point it moved 1 m/s westward. What was the vehicle's change in momentum?

a. 1,000 kg • m/s
b. 3,000 kg • m/s
c. 4,000 kg • m/s
d. 5,000 kg • m/s

Answer 1

Change in momentum will be 5000 kg-m/sec

So option (d) will be the correct option

Step-by-step explanation:

We have given mass of the vehicle m = 1000 kg

Let the velocity in eastward direction is positive so velocity in westward direction will be negative

So velocity in eastward direction
`v_2=4m/sec`

Velocity in westward direction
`v_1=-1m/sec`

We know that change in momentum is given by
`P=m(v_2-v_1)=1000(4-(-1))=5000 kgm/sec`

So option (d) will be the correct option