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Which of the following speeds is the least?

Solution

Correct Option: 2

Converting all to m/s:

50 m/s = 50 m/s

50 m/min = 50/60 = 0.833 m/s

70 km/h = 70000/3600 = 19.44 m/s

5 km/min = 5000/60 = 83.33 m/s

Least speed = 50 m/min.

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