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 $P$?
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 $P$?
- A
$20 \;\mathrm{m} \mathrm{s}^{-1}\;,\;20 \;\mathrm{m} \mathrm{s}^{-1}$
- B
$20 \;\mathrm{m} \mathrm{s}^{-1}\;,\;30 \;\mathrm{m} \mathrm{s}^{-1}$
- C
$10 \;\mathrm{m} \mathrm{s}^{-1}\;,\;20 \;\mathrm{m} \mathrm{s}^{-1}$
- D
$20 \;\mathrm{m} \mathrm{s}^{-1}\;,\;10 \;\mathrm{m} \mathrm{s}^{-1}$
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