Acceleration from Velocity Graph · PhysicsBowl 2010 #11

Physics · mechanics

Problem

Consider the motion of an object given by the velocity vs. time graph shown. For which time(s) is the acceleration of the object equal to

0 \frac{\text{m}}{\text{s}^2}

? [Figure: Velocity vs. time graph] (A) Only at time

t = 2.0\text{s}

(B) Only at time

t = 5.0\text{s}

t = 8.0\text{s}

(D) At times

t = 2.0\text{s}

and

t = 5.0\text{s}

(E) At times

t = 2.0\text{s}

t = 5.0\text{s}

, and

t = 8.0\text{s}