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SAT® Subject Test in Physics

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Velocity of Exercising Man

SATPHY-4BCEY1

Given the graph below, which represents the position of a man exercising as he moves from position $0$ at time $0$ along a straight line in positive and negative directions, what is the man's average velocity during the first 20 seconds?

Assume precision to the nearest hundredth of a meter-per-second.

A

$2.00\ m/s$

B

$–0.50\ m/s$

C

$–2.00\ m/s$

D

$–1.25\ m/s$

E

$–1.00\ m/s$