a. What is the displacement of the car in the graph?
b. What distance has the car travelled?

a. 2 m

b. 4 m

Explanation:

a. Assuming d is the position of the car, the displacement is the difference between the final position and the initial position. 3 m - 1 m = 2 m.

b. From t = 0 to t = 2.5, the car moves a distance of 3 m. From t = 2.5 to t = 4, the car moves another 1 m.

So the car moves a total distance of 4 m.

it is called kinetic energy