ForceFanCarts.doc.docx - Name Date 4.2 Force and Motion...

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Name: Date: 4.2 -- Force and Motion Student Exploration: Force and Fan Carts Vocabulary : force, friction, position, speed, potential energy, kinetic energy Gizmo Warm-up 1. In the Gizmo™, turn the fan Off . Click Play ( ). Did the cart move? Answer : 1a. An object in motion has kinetic energy and an object at rest has potential energy. What kind of energy does car have? Answer: 2. Click Reset ( ). Press the Low fan speed button to turn on the fan. Click Play . What happened? Answer : 2a. What kind of energy does the car have now? Answer: 3. A force is something that causes change in motion. What provided the force that made the cart speed up? Answer : 4. The speedometer shows the cart’s speed , or how fast it moves. A speed of 30 cm per second means the cart moves 30 cm every second. What was the final speed of the cart? Answer : 5. Friction is a force that works against motion as surfaces rub each other. Click Reset . Select the No Friction surface. Click Play . What was the final speed this time? Why? Answer : 1
Activity A: Force and motion Get the Gizmo ready : Click Reset . Change the Surface to Wood . Be sure there are no objects on the cart. The Fan speed should be set to Low .

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