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Transcript

Newton’s Laws of Motion Student Revision Sheet 1. 2. Define these terms and give the units used for them. a. Velocity b. Acceleration c. Force A case is sitting stationary on the ground, a. What is the force of gravity on the case also called? b. What other force is acting on the case? c. What does “net force” mean? 3. Explain why a table cloth pulled slowly moves an object with it but when pulled quickly slides from underneath the object? 4. What is the brief form of Newton’s First Law? Newton’s Second Law. 5. a What happens when an unbalanced force acts on an object? 6. b. List two ways that an object can accelerate? a What is meant by the expression F b. What does the “F” in a? F = ma refer to? 7. For a constant net force what happens to the acceleration as the mass increases? 8. What is the difference between inertial mass and gravitational mass? Newton’s Third Law 9. Newton’s third law is often called the action-reaction principal. Exactly what does this refer to? 10. Does action-reaction mean that two objects must move at the same speed? Explain.