A car with a mass of 1 500 kg is travelling at 90 m/s. The driver pushes the brake pedal and the brakes exert a force of 750 N on the car, causing it to eventually come to a stop.

1. What was the initial momentum of the car?
2. What was the change in momentum the car?
3. How long was it from the time the brakes were applied to the time the car came to a stop?