Question

b) A velocity time graph of a car is plotted below. Observe the graph to answer the
following questions:
8
velocity (m/s)
4
0
2
4
6
8
10
time (seconds)
(i) Find the acceleration during the first 4 seconds of motion.
(ii) Find the average velocity during the first 4 seconds of motion.
(iii) Find the average speed of the car over the 10 seconds.​

Answer 1

Acceleration can be calculated by dividing the change in velocity (measured in metres per second) by the time taken for the change (in seconds). The units of acceleration are m/s/s or m/s 2. This is the gradient of the purple line