A car is traveling at a rate of 30 meters per second. What is the car's rate in kilometers per hour? How many kilometers will the car travel in 2 hours? Do not
round your answers
Rate:
XS ?
Distance traveled in 2 hours:

Respuesta :

Answer:

Rate = 108 km/hr

Distance travelled in 2 hours = 216 km

Step-by-step explanation:

A car is travelling at a rate of 30 meters per second

1 km = 1000 meters

? km = 30 meters

Cross multiplying gives; [tex]\frac{30}{1000}[/tex] km

1 hr = 3600 seconds

? hrs = 1 second

Cross multiplying gives; [tex]\frac{1}{3600}[/tex] hrs

Speed = Distance ÷ Time

Speed in km/hr =  [tex]\frac{30}{1000}[/tex] km ÷  [tex]\frac{1}{3600}[/tex] hrs =  [tex]\frac{30}{1000}[/tex] km × [tex]\frac{3600}{1 hr}[/tex] = 108 km/hr

Distance travelled in 2 hours = 2 × 108 km = 216 km