The Fan Cart is perfect for exploring Newton's laws of motion, inertia, acceleration, and action-reaction. Put the sail in place, and the cart stays still. Remove the sail, and watch it go! We even include a clip that allows you to vary between one and two batteries, and measure the differences in acceleration with different magnitudes of net force.

Teacher Recommend: "This Fan Cart gave me a way to produce near constant acceleration without the use of gravity. I liked the fact I could demonstrate Newton's 2nd Law by varying forces produced by the fan with different masses. It was a good way to show that acceleration is proportional to the net force over the mass."