A car is moving along a straight line, say $OP$ in given figure. It moves from $O$ to $P$ in $18\; s$ and returns from $P$ to $\mathrm{Q}$ in $6.0\; s$. What are the average velocity and average speed of the car in going from $O$ to $P$ and back to $Q?$
A car is moving along a straight line, say $OP$ in given figure. It moves from $O$ to $P$ in $18\; s$ and returns from $P$ to $\mathrm{Q}$ in $6.0\; s$. What are the average velocity and average speed of the car in going from $O$ to $P$ and back to $Q?$
- A
$20\; \mathrm{m} \mathrm{s}^{-1}\;,\;20\; \mathrm{m} \mathrm{s}^{-1}$
- B
$10\; \mathrm{m} \mathrm{s}^{-1}\;,\;20\; \mathrm{m} \mathrm{s}^{-1}$
- C
$20\; \mathrm{m} \mathrm{s}^{-1}\;,\;10\; \mathrm{m} \mathrm{s}^{-1}$
- D
$30\; \mathrm{m} \mathrm{s}^{-1}\;,\;10\; \mathrm{m} \mathrm{s}^{-1}$
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