Question

a car is driving west on a highway at 25 m/s. what is the car's speed in km/h?

Answer 1

90 km/hr  

Unit conversion 1000 m/km 60 min/hr 60 s/min  

Answer 2

Answer: The speed of car is 90 km/hr

Explanation:

We are given:

Speed of car = 25 m/s

To convert this speed into km/hr, we use the conversion factors:

1 km = 1000 m

1 hr = 3600 s

Converting the speed into km/hr, we get:

$\Rightarrow (\frac{25m}{s})\times (\frac{1km}{1000m})\times (\frac{3600s}{1hr})\\\\\Rightarrow 90km/hr$

Hence, the speed of car is 90 km/hr