You just bought five rabbits. They were supposed to be constant acceleration rabbits, but you worry that some are the less expensive, non-constant acceleration rabbits. In fact, you think two might be the cheaper critters.

You take them home. When you press GO, they will run or jump for five seconds (well, one just sits still) and then the simulation stops. You can press GO as many times as you like and use the PAUSE button as well.

Your mission: Determine if you were ripped off, and drag the “½ off” sale tags to the cheaper rabbits. The simulation will let you know if you are correct. You may decide to keep the cuddly creatures, but you want to be fairly charged.

Each rabbit has a velocity gauge that you can use to monitor its motion in the simulation. The simplest way to solve this problem is to consider the rabbits one at a time: look at a rabbit’s velocity gauge and determine if the velocity is changing at a constant rate. No detailed mathematical calculations are required to solve this problem.

If you find this simulation challenging, focus on the relationship between acceleration and velocity. With a constant rate of acceleration, the velocity must change at a constant rate: no jumps or sudden changes. Hint: No change in velocity is zero acceleration, a constant rate.