Question

Using the following data, draw time - displacement graph for a moving object:

Time (s)	0	2	4	6	8	10	12	14	16
Displacement (m)	0	2	4	4	4	6	4	2	0

Use this graph to find average velocity for the first 4 s, for the next 4 s and for the last 6 s.

Answer 1

From the given data, the displacement-time graph is shown as

Average velocity = `("Change in displacement")/("time interval")`

∴ For first 4s, v₁ = `(4 - 0)/4`

= 1 ms⁻¹

For next 4s v₂ = `(4 - 4)/4`

= 0 ms⁻¹ 

For last 6s v₃ = `(0 - 6)/6`

= −1 ms⁻¹