If a marathon runner runs a distance of 5 km (kilometers) in 45 minutes. What is his speed?

Given parameters:

Distance  = 5km

Time taken = 45 minutes

Unknown:

Speed  = ?

Solution:

Speed is a physical quantity.

It is given as;

   Speed  =

Since the unknown is speed;

     convert the time given to hours;

         60min  = 1hr

         45min =   =

So, speed  =   = 5 x  

                        = km/hr

all fossil fuels are nonrenewable, so think coal, gasoline, things that we will eventually run out of. all fossil fuels are nonrenewable resources, but not all nonrenewable recourses are fossil fuels. these resources are not being renewed as fast as we are using them. i hope this considering there weren't any answer choices.