A car starts from rest at a traffic light

PHYSICS · Single correct · CBSE · Physics · Motion · Motion

Problem

A car starts from rest at a traffic light, accelerates at

3.0\,\text{m/s}^2

for

4.0\,\text{s}

, and then continues at constant velocity for an additional

5.0\,\text{s}

. What is the car’s total displacement from the light after the

9.0\,\text{s}

interval? (a)

108\,\text{m}

(b)

84\,\text{m}

(c)

60\,\text{m}

(d)

72\,\text{m}

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