Question

Bus travelling with increasing acceleration (non – uniform acceleration)

Time (s)	0	1	2	3	4	5
Speed (m s-1)	0	2	8	18	32	50

Answer 1

The increase in speed is increasing with time. Hence, the graph has a positive and increasing gradiaent, and the acceleration increases.

The instantaneous acceleration of the car at t=3 s is given by the gradient of he tangent at the point.