Question

3. Which is greater - a speed of 30 m/sec or 30 km/h?
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Answer 1

Answer:

30 km/h is greater speeds means that it has the speed of covering 30 kilometres per hour.

Answer 2

Answer:

To compare the above two speeds, their units must be the same. Let us make the units the same.

1 m/s = 0.001 km/(1/3600) hour

It implies that,

1 m/s = 3.6 km/h

∴ 30 m/s = 30 x 3.6 km/h =108 km/h

∴ 108 km/h > 30 km/h

So, 30 m/s is greater than 30 km/h