Question

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

Conversion factor tiles
A. 0.27 m/s
B. 20. m/s
C. 36 m/s
D. 1,000 m/s

Answer 1

The correct answer is option B.

Step-by-step 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=(72* 1000 m)/(1* 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