Question

An athlete begins her normal practice for the next marathon during the evening. at 6.00 pm, she start to run and leave her house. at 7.30 pm she finishes her run at home and has a run total 7.5 mile. how fast the average speed over the courses of the run. illustrate the speed in the graph.

Answer 1

$$distance=7.5mi$$

$$time=1.5h$$

$$v_{ave}=\dfrac{distance}{time}=\dfrac{7.5mi}{1.5h}=5mi/h$$