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Question
Convert the following speeds into $$m/sec:$$
$$1.2\ km/minutes$$
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Solution
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$$1.2\ km/minutes$$
$$1\ hour=60\ minutes$$
Now, $$\dfrac{1\ km}{h}=\dfrac{5}{18}\ m/s$$
$$1.2 \times 60\ km/h=1.2 \times 60 \times \dfrac{5}{18}\ m/sec$$
$$=72 \times \dfrac{5}{18}\ m/sec=20\ m/sec$$
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