Discussion of Question with ID = 023 under Distance-and-Time

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Question

A car is moving at a speed of 40 meters per second. What is the speed in Km/h?

A

144 kmph.

B

145 kmph.

C

143 kmph.

D

146 kmph.

Soln.
Ans: a

We know 1m/s = $18/5$ kmph. So 40m/s = $18/5 × 40$ = 144 kmph.


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