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Forces and Motion Unit 7

This comprehensive review on forces and motion focuses on Newton’s Laws, providing essential questions and concepts. Key topics include mass and inertia, the effects of force on motion, and how unbalanced forces influence objects. Analyze scenarios involving collisions, such as two cars crashing, and explore the mechanics of catapults and rockets. The review covers force calculations, including weight and acceleration, alongside practical applications and limitations of models. Ideal for students preparing for exams on dynamics and kinematics.

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Forces and Motion Unit 7

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  1. Forces and Motion Unit 7 Exam Review

  2. Law of….? • The law that defines the more mass something has, the more difficult it is to start and stop is…?

  3. The speed of an object flying though outer space with no other force acting on it will _________.

  4. How many Newtons of force is pushing down?

  5. What is the force pushing down on the 1kg mass? ____________ • What is the force pulling left? ____________

  6. Colliding Masses • Two cars crash into each other. • Which of Newton’s laws BEST describes why both cars’ hoods are crumpled afterwards? • Model with two aluminum squares and discuss limitations

  7. A catapult launches a boulder. • Which Newton’s law describes why the rock continues to fly after the catapult arm stops?

  8. Balanced forces on an object causes the object to ______________? • Unbalanced forces on an object caused the object to ________________?

  9. The force that opposes all motion is ____________

  10. A rocket weight 20kg and is speeding up at an acceleration of 5m/s squared. How much force does the rocked have?

  11. Fill in the Blanks • An object at rest stays at rest and an object in motion stays in motion with the same _________ and __________ until acted upon by an unbalanced force.

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