Question

The driver of a car travelling 75.0 km/hr suddenly sees road construction up ahead. She takes 2.30 s to begin applying the brakes. The car slows down at a constant rate of 10.0 km/hr/s for until she comes to a stop.

     a. Draw a picture showing the various intervals of the car’s motion and accelerations.

     b. Calculate the average acceleration of the car after the driver applies the brake.

     c. What is the total distance the car travelled from the time she spotted the construction until she stops?

Answer 1