The position of a particle is meters

MATHEMATICS · Single correct · A Level · Mathematics · Kinematics · Kinematics

Problem

The position of a particle is

s(t)=2t^{3}-5t^{2}+4

meters, where

t

is in seconds. What is the particle’s velocity at

t=2

seconds? (a)

8\text{ m/s}

(b)

4\text{ m/s}

(c)

14\text{ m/s}

(d)

-8\text{ m/s}