Joe Cool drives to see his girlfriend who attends another college. The 161 km trip takes 2.0 h. What was the average speed for the trip?

Question

needs help

Answer 1

 D _{distance traveled} =  t _{time traveled} * S_{speed ( rate of traveling)}

 

 

        161 Km = 2 ( hours)  * S 

 

           S = 161km/ 2 hours = 80.5   Km/ hr

Answer 2

Hi Whitney;

(161 km)/(2.0 hours)

I assume you want this into standard units of seconds, not hours.

[(161 km)/(2.0 hours)][(1 hour)/(3600 seconds)]

The unit of hours is in the denominator and numerator...

[(161 km)/(2.0 hours)][(1 hour)/(3600 seconds)]

[(161 km)/(2.0)][(1)/(3600 seconds)]

(161 km)/(7200 seconds)