The velocity of a particle varies with time as (in )

PHYSICS · Single correct · AP · Physics C: Mechanics · Kinematics · Kinematics

Problem

The velocity of a particle varies with time as

v = 4t^{2} - 2t

(in

\text{m s}^{-1}

). What is its instantaneous acceleration at

t = 3\,\text{s}

? (a)

24\,\text{m s}^{-2}

(b)

22\,\text{m s}^{-2}

(c)

10\,\text{m s}^{-2}

(d)

14\,\text{m s}^{-2}