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PHY131H1S – Introduction to Physics I Class 2

PHY131H1S – Introduction to Physics I Class 2. Today: finishing Chapter 1. Position, velocity, and acceleration Problem solving Scaling Significant Figures. Pre-Class Reading Quiz. Which car is going faster, A or B? (Assume these are both motion diagrams.). A. B.

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PHY131H1S – Introduction to Physics I Class 2

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  1. PHY131H1S – Introduction to Physics IClass 2 Today: finishing Chapter 1. • Position, velocity, and acceleration • Problem solving • Scaling • Significant Figures

  2. Pre-Class Reading Quiz Which car is going faster, A or B? (Assume these are both motion diagrams.) A B

  3. Tactics: Finding the acceleration vector

  4. Tactics: Finding the acceleration vector

  5. Tactics: Finding the acceleration vector

  6. In Class Question: A particle undergoes acceleration while moving from point 1 to point 2. Which of the choices shows the velocity vector as the object moves away from point 2?

  7. A ball rolls up a ramp, and then down the ramp. We keep track of the position of the ball at 6 instants as it climbs up the ramp. At instant 6, it stops momentarily as it turns around. Then it rolls back down. Shown below is the motion diagram for the final 6 instants as it rolls the ramp.

  8. A ball rolls up a ramp, and then down the ramp. We keep track of the position of the ball at 6 instants as it climbs up the ramp. At instant 6, it stops momentarily as it turns around. Then it rolls back down. Shown below is the motion diagram for the final 6 instants as it rolls the ramp.

  9. In Class Question: Rank in order, from the most to the least, the number of significant figures in the following numbers. a = b = d > c b = d > c > a d > c > b = a d > c > a > b b > a = c = d

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