A particle moves along the –axis with velocity meters per second

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

Problem

A particle moves along the

x

–axis with velocity

v(t)=t^{2}-5t+6

meters per second, where

t

is in seconds. For

0\le t\le 5

, at which time(s) is the particle at rest? (a)

t=2.5\,\text{s}

(b)

t=2\,\text{s}\,\text{only}

(c)

t=2\,\text{s}\,\text{and}\,t=3\,\text{s}

(d)

t=1\,\text{s}\,\text{and}\,t=4\,\text{s}