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Understanding Net Force and Motion in Physics

This overview covers key concepts from Newton's laws regarding net force and motion. It explains that if the net force on an object is zero, the object's motion remains unchanged, indicating balanced forces. Newton’s First Law states that an object at rest stays at rest unless acted on by unbalanced forces. If forces act in opposite directions, the net force can indicate significant motion change. This resource also clarifies the distinction between balanced and unbalanced forces, particularly in real-world scenarios such as automobile motion.

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Understanding Net Force and Motion in Physics

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  1. TB pg 94 Answer question 1-4, 6-8 In NB on page 111 Color code answers

  2. Net force is the combination of all the forces acting on an object. Question 1

  3. If the net force acting on an object is zero, the motion of the object does not change. Question 2 Newton’s 1st law

  4. If it is moving at a constant speed, then the forces are BALANCED. Question 3

  5. If the forces act in opposite directions, then the net force will be 200N. Question 4

  6. C – an object at rest will remain at rest unless an UNBALANCED forces act on it. Question 6

  7. If the forces are UNBALANCED, then the motion of the car is changing. Question 7

  8. In both cases, the motion of the object is not changing. You cannot tell the difference between the two situations. Question 8

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