Physics Past Paper 2.5-2.6 on First Law Inertia(PDF)
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This document is a set of physics review notes with questions relating to Newton's First Law of Motion, focusing specifically on inertia. It contains review of the concept of Newton's first law of motion. Furthermore, it also contains several practice questions that apply the law to everyday situations and includes discussions on concepts from various parts of the course
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WHEN YOU ARRIVE… Pick up and work on: Review Sheet Take out: 3 notes from link TODAY IN F.o.S. 1. Discuss the Review Sheet 2. Newton’s First Law – The Law of Inertia ASSIGNMENT Review Day tomorrow BIG QUIZ on Wednesday Review: M...
WHEN YOU ARRIVE… Pick up and work on: Review Sheet Take out: 3 notes from link TODAY IN F.o.S. 1. Discuss the Review Sheet 2. Newton’s First Law – The Law of Inertia ASSIGNMENT Review Day tomorrow BIG QUIZ on Wednesday Review: Metrics Chart and conversions 2.1-2.6 notes NEWTON’S 1ST LAW OF MOTION : LAW OF INERTIA Every object continues in its state of rest or of uniform speed in a straight line (constant velocity) unless a net force acts on it. LAW OF INERTIA Inertia is the tendency of an object to resist changes in its velocity: whether it’s in motion or motionless. These basketballs will not move unless acted on by an unbalanced force. Why then do we observe every day objects in motion slowing down and becoming motionless seemingly without anwe It’s a force outside force? sometimes cannot see – friction. LAW OF INERTIA Old thinking: Continual forces are needed to maintain motion. New thinking: A force causes an object to move, and it will continue to move in such a way until another force WHAT ABOUT IN SPACE? CONCEPT CHECK When the space shuttle moves in a nearly circular orbit around Earth, is a force needed to maintain its high speed? If suddenly the force of gravity were cut off, what type of path would the shuttle take? NET FORCE Net Force – the combination of all forces that act on an object Net force is needed to change an object’s state of motion. How is net force different from force? Newton = scientific unit of force AN EXAMPLE OF NET FORCE Shooting a basketball force of gravity air friction pushing force Net Force – the combination of all forces that act on an object Vector 5N Quantities 5N 10 N (to the _____________________ right) 10 10 N 0N _____________________ N 15 5N N 10 N (to the _____________________ left) COMING UP… Next time: QUIZ on 2.1-2.6 Things to know: 1. Metrics Chart 2. Concepts from sections 1-6 3. How the 1st law applies to your life 4. The first law from memory! PRACTICE QUIZ What is the difference between speed and velocity? PRACTICE QUIZ How can you be both at rest and also moving at 30 km/h? PRACTICE QUIZ You are playing a game of kickball. You kick the ball, it flies in the air, hits the ground, and rolls to stop. How would Aristotle explain this behavior? How would Galileo explain it? PRACTICE QUIZ How is it possible to pull a tablecloth out from under a table setting without too much movement of the dishes? (use science terms in your answer)
