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Convert a speed of $90$ km/hr into metres per second.

A$18$ m/s

B$22.5$ m/s

C$25$ m/s

D$27$ m/s

Answer & Solution

Correct answer: C. $25$ m/s

Multiply km/hr by $\dfrac{5}{18}$: $90 \times \dfrac{5}{18} = 25$ m/s.

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