At on a curved distance–time graph

PHYSICS · Single correct · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

t=4\,\text{s}

on a curved distance–time graph, a tangent passes through the points

(2\,\text{s},\,10\,\text{m})

and

(6\,\text{s},\,26\,\text{m})

. Determine the instantaneous speed of the body at

t=4\,\text{s}

. (a)

8\,\text{m/s}

(b)

16\,\text{m/s}

(c)

4\,\text{m/s}

(d)

2\,\text{m/s}