A car moves backward $10 \mathrm{~m}$ in $2 \mathrm{~s}$ at a steady rate. The car's speed is therefore $-5 \mathrm{~m} / \mathrm{s}$

Name: A car moves backward $10 \mathrm{~m}$ in $2 \mathrm{~s}$ at a steady rate. The car's speed is therefore $-5 \mathrm{~m} / \mathrm{s}$
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Quizplus · Accepted Answer

Speed is a scalar quantity and does not have a direction, so the car's speed is $5 \mathrm{~m} / \mathrm{s}$, not $-5 \mathrm{~m} / \mathrm{s}$. The negative sign would indicate direction in velocity, not speed.

A Car Moves Backward 10 m10 \mathrm{~m}10 m In 2 s2 \mathrm{~s}2 s At a Steady Rate

A Car Moves Backward $10 \mathrm{~m}$ In $2 \mathrm{~s}$ At a Steady Rate