A car’s velocity is modeled by meters per second for

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

Problem

A car’s velocity is modeled by

v(t)=3t^{2}-12t+5

meters per second for

1\le t\le4

. What is the car’s average acceleration (in m/s

^{2}

) over this interval? (a)

6

(b)

3

(c)

-3

(d)

9