A particle moves along the -axis with velocity (in meters per second) for

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

Problem

A particle moves along the

x

-axis with velocity

v(t)=3t^{2}-4t+1

(in meters per second) for

t\ge 0

. What is the particle’s acceleration at

t=2\text{ s}

? (a)

-8\text{ m/s}^2

(b)

8\text{ m/s}^2

(c)

6\text{ m/s}^2

(d)

5\text{ m/s}^2