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Clicker questions for Forces and Motion Activity 1

Learn how external forces affect the speed and direction of an object's motion using free body diagrams. Explore static friction, kinetic friction, and friction force.

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Clicker questions for Forces and Motion Activity 1

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  1. Clicker questions for Forces and Motion Activity 1 Trish Loeblein phet.colorado.edu Learning Goals: Students will be able to Predict, qualitatively, how an external force will affect the speed and direction of an object's motion Explain the effects with the help of a free body diagram Explain the difference between static friction, kinetic friction and friction force. This goal is not addressed in the student directions, but is part of the post-lesson.

  2. 1. If the total force acts in the same direction as the crate is sliding, the crate Crate was moving to the right Then, the guy pushed the crate • slows down • speeds up • remains at same speed • slows down, changes direction and then speeds up going the other way • remains at same speed, but changes direction

  3. Cabinet was moving to the left 2. If the total force acts in the opposite direction as the cabinet is sliding, the cabinet would Then, the guy pushed the cabinet • slow down • speed up • remain at same speed • slow down, change direction and then speed up going the other way • remain at same speed, but change direction

  4. Refrigerator was moving to the right Then, the guy pushed the refrigerator 3. If there is zerototal force acting on on the refrigerator, the refrigerator would • slow down • speed up • remain at same speed • slow down, change direction and then speed up going the other way • remain at same speed, but change direction

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