Collision Momentum

Question

In a collision, an object experiences a force (or impulse) for a certain amount of time, which changes the momentum of the object. When an impulse is encountered, the object’s mass either speeds up or slows down. We can describe the impulse-momentum change using the equation below. F × t = m × Δv If a 2,500 kg car is moving at 30 m/s when it hits a truck, resulting in a 20,000 N force that slows the car down to 10 m/s. The car experience the force for how long?

Answer 1

Rearrange the equation to solve for t: t = m(v_f - v_i)/F f,i are final and ititial.

Plug in values in MKS units and you'll get seconds out.