15 The diagram shows information about the first 100 seconds of a car journey. 18 16- 14- 12- Speed 10- (m/s) 8 9 4 2- 0 0 10 20 30 40 50 Time (s) 60 70 80 90 100
(a) Calculate the acceleration during the first 20 seconds of the journey.
(b) Work out the total distance travelled by the car in the 100 seconds. m/s² [1]​