Simple Machines

We started learning about simple machines this week.  Some simple machines are ramp (or inclined plane), lever, pulley, and wheel and axel.  On Monday and Tuesday we conducted an experiment to see which ramp would propel our toy race car the farthest distance.

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First we made a hypothesis, an educated guess, about which ramp would propel the car the farthest (blue circle).  Then we conducted our experiment, testing each ramp and measuring the distance traveled.  Our result was the longer ramp with the smallest slope propelled the car the farthest (red circle).

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Why do you think that ramp worked the best?

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