What is the steepness of a hill before a unicyclist slides down it rather than pedaling down it? The simulation graphs the wheel speed versus the unicycle speed as the rider goes down a hill. Scholars control the mass of the rider,...

How does the soda clerk know exactly how to get the glass across the counter to the customer? Pupils use the simulation to adjust the launch velocity, glass weight, base area, surface material, and the customer's position to answer...

How much energy in Jewels does it take to tow a car up a slope? Scholars explore different values of both kinetic and potential energy to answer that question. Through multiple levels, the difficulty increases — as does your young...