Lecture 5 PowerPoint - Today Acceleration and Forces Mass...

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1 Today Acceleration and Forces Mass, inertia and Newton’s 1 st law Free-body diagrams and Newton’s 2 nd law There is no Worksheet - just clicker questions Thursday, 20 September, 12
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2 Force and Acceleration Thursday, 20 September, 12
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2 Force and Acceleration Thursday, 20 September, 12
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3 Inertia and Mass Force is required to overcome inertia : Has something to do with the object being heavy. More precisely, it is the consequence of the mass of an object. Thursday, 20 September, 12
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3 Inertia and Mass Force is required to overcome inertia : Has something to do with the object being heavy. More precisely, it is the consequence of the mass of an object. What is inertia? Thursday, 20 September, 12
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3 Inertia and Mass Force is required to overcome inertia : Has something to do with the object being heavy. More precisely, it is the consequence of the mass of an object. What is inertia? Thursday, 20 September, 12
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3 Inertia and Mass Force is required to overcome inertia : Has something to do with the object being heavy. More precisely, it is the consequence of the mass of an object. What is inertia? Answer: Video on inertia Thursday, 20 September, 12
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3 Inertia and Mass Force is required to overcome inertia : Has something to do with the object being heavy. More precisely, it is the consequence of the mass of an object. What is inertia? Answer: Video on inertia ( ) Thursday, 20 September, 12
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4 Newton’s First Law Thursday, 20 September, 12
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4 Newton’s First Law Every body continues in its state of rest or of uniform speed in a straight line (constant velocity) as long as no net force acts on it. This means that we need to apply a net force if we want to accelerate (or decelerate) an object or change its direction of motion. (2 nd law.) Thursday, 20 September, 12
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Seat Belts: An Application of Newton’s First Law Take a look at the three pictures. What does the green arrow represent? A. Net force on the driver B. Acceleration of the driver C. Velocity of the driver D. Displacement of the driver Thursday, 20 September, 12
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Seat Belts: An Application of Newton’s First Law Take a look at the three pictures. What does the green arrow represent? A. Net force on the driver B. Acceleration of the driver C. Velocity of the driver D. Displacement of the driver Thursday, 20 September, 12
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Seat Belts: An Application of Newton’s First Law Job of the seat belt: prevent the driver from moving into the dashboard; slow the driver down at the same rate as the rest of the car.
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  • Spring '11
  • ERIC
  • Force, net force

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