Question

Based on the tiles shown, how many meters per second is equivalent to 72 kilometers per hour?

Answer 1

Answer:

The correct answer is option B.

Explanation:

Given speed of 72 km/hour.

1 kilometer = 1000 m

1 hour = 60 minutes

1 minutes = 60 seconds

1 hour = 60 × 60 seconds = 3600 seconds

$72 km/h=\frac{72\times 1000 m}{1\times 3600 s}=20 m/s$

= 20 m/s

72 km/h = 20 m/s

Hence, the correct answer is option B.

Answer 2

We are asked to convert the value 72 kilometers per hour to units of meters per second. We need conversion factors to multiply to this value. We convert as follows:

72 km / hr ( 1000 m / 1 km ) ( 1 hr / 3600 s ) = 20 m/s --->OPTION B