The magnitude of change in the momentum of the body in one second, given that the a 20 N force was used is 20 Kgm/s (option B)
How to calculate the change in the momentum of the body?
Chang in momentum is defined as the product of force and time of impact. This is represented mathematically as:
Change in momentum = Force × time
Now, we shall use the above formula to calculate the change in the momentum of the body. This is illustrated below:
- Force applied to the body = 20 N
- Time = One second
- Change in momentum of body =?
Change in momentum of body = Force applied to the body × time
= 20 × 1
= 20 Kgm/s
From the above, we can see that the change in momentum of the body is 20 Kgm/s. Therefore, we can say that the correct answer is option B