PHYS1110_NV_Lecture2 (1)
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PHYS1107: Day 14 Unit 6: Uniform Circular Motion
Nakul [email protected]: Lecture 21Kinematics ReviewInstantaneous ChangeDisplacementDistanceVelocitySpeedConstant AccelerationIn Class AssignmentInstantaneous VelocityInstantaneous AccelerationTopic Summary2Displacement & DistanceDisplacement: Change () of PositionFrom initial position to final positionDisplacement can be +positive or -negativeDisplacement is a Vector quantityHas both magnitude and position informationDistance: How much did you travel?Scalar quantity: only has magnitudeDistance is +positiveFor some cases, Distance = |Displacement|
Velocity & SpeedVelocity: displacement change over time periodVelocity is a vectorSpeed: distance change over time periodSpeed is a scalarFor some cases, speed = |velocity|SI Unit: m/s
AccelerationAcceleration: velocity change over time periodAcceleration is a vectorAcceleration SI unit: m/s2
Constant Acceleration Equationsx = x1 xo: displacementt: timevf or v: final velocityvi or vo: initial velocitya: acceleration
Velocity Graphical AnalysisSlope of position vs time graph
Acceleration Graphical AnalysisSlope of velocity vs time graph
In Class AssignmentTextbook Chapter 2Problem 11128 km/hrProblem 29(a) 10.6 m(b) 41.5 s or 4.15 s (????)Problem 33(a) 3.56 m/s2(b) 8.43 m/sProblem 534.0 m/s