In a particular crash test, an automobile of mass 1295 kg collides with a wall and bounces back off the wall. The x components of the initial and final speeds of the automobile are 25 m/s and 1.5 m/s, respectively.

Question

In a particular crash test, an automobile of mass 1295 kg collides with a wall and bounces back off the wall. The x components of the initial and final speeds of the automobile are 25 m/s and 1.5 m/s, respectively.
If the collision lasts for 0.11 s, find the magnitude of the impulse due to the collision.
Answer in units of kg · m/s.

I'm having a lot of trouble with this. Where do I start? What equation?

Henry · Answer

Impulse = M*(V-Vo) = 1295*(-1.5-25) = 34,318 kg*m/s