• Recall that when the velocity is constant, it is given by v= Dx / Dt.
• Graph velocity versus time for this problem.

A bicycle rider passes a tree and notices that their speedometer reads 10 mph.  They immediately being to pedal faster, accelerating at a constant rate until they pass a lamppost 10 seconds later.  At that moment they are traveling at 20 mph.  How far did the bicyclist travel from the tree to the lamppost?

• Graph v versus t