Assume a car and truck are moving with the Impulse same speed of 15 m/s. 1) Calculate momentum of the car of mass 975 kg 2) Calculate momentum of the truck of mass 2675 kg 3) Determine the force =? Needed to stop each in 25 s.
Momentum = mass x velocity
The acceleration is the change in velocity/time.
Force = mass x acceleration.
So for the 1st truck:
So for the 2nd truck:
The minus sign means this is a braking force.