The figure below is a velocity time graph for a car. velocity time graph for a car

Question

The figure below is a velocity time graph for a car.

1. Find the total distance traveled by the car. 
2. Calculate the deceleration of the car. 

Answer 1

1. Area under the curve = Distance
   (½ × 4 × 80) + (16 × 80) + (½ × 4 × 80)
   =160 + 1280 + 160
   =1600m
2. Deceleration = change in speed
                            Time taken
                     = ⁸⁰/₄
                     =20m/s²