Such graphs are known as displacement-time graphs. Sections A and C show travelling away from home. Sections B and D are when the journey has paused for a rest or a wait.

Find the displacement of an object which accelerates from rest to 30 m/s in 3s. A: Here, initial velocity = 0, final velocity = 30m/s, time taken = 3s. So, acceleration = 30/3 = 10 m/s² ...