At the beginning of Activity 1 of this unit, you sketched a speed-time graph for a soccer ball that was given a quick kick and then slowed to a stop as it rolled across the grass. Sketch this graph again on the following page, with any changes from the original you wish to make.

On the graph use different colored pencils to indicate:

a) The section (or sections) of the graph during which there was a contact push/pull interaction between the foot and the ball

b) The section (or sections) of the graph during which a force acted on the ball in the same direction as its motion

Explain your reasoning for choosing these sections.