Question

1. Express a speed of 54 km per hour in metres per second​

Answer 1

Answer:

1 kilometer is equal to 1000 meters. 1 Hour is equal to 60 minutes. 1 minute is equal to 60 seconds. Hence, 54 km/h is equal to 15 m/s.

Step-by-step explanation:

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Answer 2

Answer:

54 km/h = 15m/s

Step-by-step explanation:

$54 \frac{km}{h} \\ = \frac{(54 \times 1000) \: m}{3600 \: s} \\ = \frac{540}{36} \frac{m}{s} \\ = 15 \frac{m}{s}$