Question

How do I convert 21 km/h to m/s using dimensional analysis?

A) 0.0058 m/s
B) 5.8 m/s
C) 58 m/s
D) 580 m/s

Answer 1

To convert 21 km/h to m/s using dimensional analysis, you need to use conversion factors to cancel out the units and calculate the new value. The answer is 5.83 m/s.

Step-by-step explanation:

To convert 21 km/h to m/s using dimensional analysis, we need to use conversion factors to cancel out the units and calculate the new value. We will use two conversion factors: 1 km = 1000 m and 1 h = 3600 s.

So,

21 km/h × (1000 m/1 km) × (1 h/3600 s) = 5.83 m/s

Therefore, the answer is 5.83 m/s.