Motions and Forces Instructional Unit Air Cart Build (and test) an air cart that operates with very little friction Trial I: Building an air cart Trial II: Building a test ramp Trial III: Performing a coasting test Go to Investigation Contents Tracker Explore the relationship between the movement of a cart and the shapes of the resulting position and velocity graphs Trial I: Walking off distances Trial II: Rolling cart Trial III: Rolling to a stop Go to Investigation Contents Propeller Investigate how friction and the driving force of a propeller mounted on an air cart oppose one another Trial I: Adding a propeller to a cart Trial II: Measuring the motion of a propeller-driven cart Trial III: Adding a friction sled to a propeller-driven cart Go to Investigation Contents Collision I Investigate what happens during a collision of a cart with a wall Trial I: Weighing the cart with the Force probe Trial II: Colliding a cart with a wall Trial III: Adding a bungee cord Go to Investigation Contents Collision II Investigate what happens during a collision between two carts Trial I: Action and reaction Trial II: Forces on colliding carts Trial III: Velocities of colliding carts Go to Investigation Contents

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