Question

5. The speed of a car is 72 km/h. Express it in m/s.​

Answer 1

Answer:

pls mark me brainliest

Explanation:

To convert units, you multiple by the conversion ratios. 1,000 m are in 1 km (kilo = 1,000), and 3,600 seconds are in one hour (60 minutes, each with 60 seconds, or 60 * 60).

These can be represented by the following:

1 = 1,000 m / 1 km

1 = 1 hr / 3,600 s

We can now do some substitution in your original formula.

72 km/hr = 72 km/hr

72 km/hr = 72 km/hr * (1,000 m / 1 km)

72 km/hr = 72,000 m/hr

72 km/hr = 72,000 m/hr * (1 hr / 3,600 s)

72 km/hr = 20 m/s

20 m/s is the final answer.

I hope that this helps!