Mathematics

Problem

A car moves such that its displacement from the origin is given by

x(t)=5+3t

metres. What is the ratio of its instantaneous velocity at

t=7\,\text{s}

to its average velocity between

t=0

and

t=10\,\text{s}

? a)

0.7

1

\dfrac{8}{3}

\dfrac{6}{7}