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Understanding Forces and Motion on Inclined Planes: A Classroom Experiment

This lesson explores the dynamics of forces and motion through inclined planes, demonstrating how objects slide down a tilted surface. It delves into the relationship between the angle of inclination and the sliding rate, highlighting the role of gravity as an unbalanced force. Friction is introduced as the opposing force affecting motion. The activity involves a toy car race on a ramp, where students gather data to investigate balanced and unbalanced forces, ultimately determining which car won the race and the conditions affecting their speeds.

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Understanding Forces and Motion on Inclined Planes: A Classroom Experiment

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  1. Log 13 Debrief Force and Motion

  2. Incline Plane An object placed on a tilted surface will often slide down the surface. The rate at which the object slides down the surface is dependent upon how tilted the surface is; the greater the tilt of the surface, the faster the rate at which the object will slide down it. In physics, a tilted surface is called an inclined plane. Objects are known to accelerate down inclined planes because of an unbalanced force.

  3. Gravity The force of gravity is the force with which the earth, moon, or other massively large object attracts another object towards itself. By definition, this is the weight of the object. All objects upon earth experience a force of gravity that is directed "downward" towards the center of the earth.

  4. Friction Friction isaforcethat holds back the movement of a sliding object. That's it. Friction is just that simple. You will find friction everywhere that objects come into contact with each other. The force acts in the opposite direction to the way an object wants to slide. If a car needs to stop at a stop sign, it slows because of the friction between the brakes and the wheels. If you run down the sidewalk and stop quickly, you can stop because of the friction between your shoes and the cement.

  5. Motion Any movement or change in position or time.

  6. Newton’s First Law of Motion According to Newton s First Law of Motion, also known as the Law of Inertia, an object at rest remains at rest and an object in motion remains in motion until it is acted upon by an unbalanced force. Cheesy Video

  7. Question One Balanced! Reaction force of the ramp • 1. A science class uses a toy car race to study and collect data about forces and motion. The racetrack shown has a 6-meter ramp and a 5-meter level section to the finish line. Two cars compete at a time. The data table and graph below show the speed and total distance traveled for car 1 and car 2 during the first three seconds of a race. On what section of the racetrack will the forces on the cars be balanced, andat what point on the track does a car reach its fastest speed? (Your answer must address both questions.) Fastest Here! Weight of the cars

  8. Question 2 2. Which car won the race? Provide support to explain why your answer is correct. 2.Which car won the race? Provide support to explain why your answer is correct.

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