Wood Dynamics Carts, Ideal for demonstrating Newton's laws of motion, Each

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Carts made with low-friction ball-bearing wheelsTop surface can be loaded with additional massesOne cart in each set is equipped with an “exploder piston,” activated by a trigger on top that can be preset to three positionsSpring-steel hoop bumpers used for collision and energy experimentsOrder InfoSold as a set of two carts.