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Agenda Warm Up Finish Lab

Warm Up Find the acceleration of a falling object that goes from rest to 10m/s after 1.7s?.

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Agenda Warm Up Finish Lab

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  1. Warm Up Find the acceleration of a falling object that goes from rest to 10m/s after 1.7s? AP PhysicsMonday 13.09.16Standards: 1)a. Students should understand the general relationships between position velocity & acceleration for a particle along a straight line. Objective: SWBAT find the acceleration due to gravity on earth using video analysis. Agenda • Warm Up • Finish Lab Homework Lab Write up Due Thursday Physics Worksheet

  2. AP PhysicsTuesday 13.09.17Standards: 1a1: Given a graph of position, velocity, or acceleration vs. time students can identify positive, negative, and at rest intervals and can sketch a graph of each.Objective: SWBAT turn displacement vs. time graphs into velocity vs. time graphs and acceleration vs. time graphs Warm Up An automobile traveling at 15.0 km/h along a straight level road accelerates to 65.0 km/hr in 6.00s. What is the magnitude of the auto’s average acceleration? Agenda • Warm Up • Analyzing & Interpreting Graphs • Practice • Homework • Graphing & Problem Solving Worksheets.

  3. AP PhysicsWednesday 13.09.18Standards: 1b write down displacement and velocity as functions of time and graph each functionObjective: SWBAT analyze kinematic graphs and obtain useful information about the motion of objects. Warm Up Agenda • Warm Up • Work on Worksheet v(m/s) t(s) Homework Finish Front and Back of Graphing Worksheet

  4. Warm Up AP PhysicsThursday 13.09.19Standards: 1b2 The distance equations.Objective: SWBAT use the three equations of motion to solve constant acceleration problems. Find the total displacement from this graph. 10 8 6 F Agenda • Warm Up • Correct HW • Announce AP Physics Class at UCLA Saturday • Objects undergoing constant acceleration 4 v(m/s) 2 t(s) 4 8 20 -2 16 12 -4 -6 -8 -10 Homework Quiz Tomorrow (graphs, speed, displacement, average acceleration) Holt Wkbk p.7, 1-6

  5. Warm Up Find the displacement from this velocity vs time graph AP PhysicsFriday 13.09.20Standards: 1b2 The distance equationsObjective: SWBAT use the 2nddistance equation to solve 1D constant acceleration problems. 10 8 6 4 Agenda • Warm Up • Correct HW • Quiz 2 • Solve 3rd Equation of Motion Problems v(m/s) 2 t(s) 4 8 20 -2 16 12 24 28 -4 -6 -8 -10 Homework Lab Report Due Monday 3rd Equation of motion Holt Wkbk p.12-13 #1-7

  6. Acceleration due to Gravity Lab What is the acceleration due to gravity & do different objects accelerate at different rates? - Develop an experiment that will allow you to find the value for acceleration due to gravity. -Lab Writeup: Due Thursday • Be sure to: • Find a good way to make your height measurements. • Do multiple trials and average the values. • Choose objects that are more aerodynamic. • I am not giving you an equation to find acceleration with. Your graph should reveal the relationship. You may need to linearize your graph.

  7. Displacement vs. Time Graph Find total displacement & the distance traveled by the bike. Find the average velocity of a bicycle and highest magnitude of velocity if the motion is described in the graph below. Sketch the velocity vs. time graph. 50 40 30 x(m) 20 10 5 10 15 20 25 t(s)

  8. Velocity vs. time graph. Below is a velocity vs. time graph of a train on straight horizontal tracks. What is the speed from t=0.5 s to t=1s? What is the acceleration from t=1.25s to t=1.5s? How much is the train displaced between t=1.5s and t=2.0s? What time interval is the train stationary? What time interval has the greatest magnitude of acceleration? Sketch an acceleration time graph of the motion. 50 v(m/s) 40 30 20 10 0.5 1.0 1.5 2.0 2.5 t(s)

  9. Complete the following Graph At what points is train stationary? During what intervals is the acceleration decreasing (-) What is the change in velocity from t=0s to t=2s? What is the instantaneous velocity at t=4.5s? What is the acceleration from t=0.5s to t=1.0s? Sketch an acceleration time graph of the motion. 50 40 v(m/s) 30 20 10 1 2 3 5 4 -10 t(s) -20 -30 -40 -50

  10. Complete the following Graph What is the total displacement from t=0 to t=1s When is the velocity constant? When is the acceleration positive? What is the instantaneous acceleration at t=4.25s? Can we find the total displacement from t=2.5 to t=3.0s? Explain why or why not. Sketch an acceleration time graph of the motion. 50 40 v(m/s) 30 20 10 1 2 3 5 4 -10 t(s) -20 -30 -40 -50

  11. 3 equations of Motion There are three equations of motion that we use. I will derive 1&3 1 is created by combining a=Δv/Δt & Δv=v-v0 1. 2 can be found by graphing the motion of an accelerating object on a v vs t graph and finding its area. It can be derived using calculus. 2. 3. 3 is created by combining equations 1&2 Though you will not need to derive these, these illustrate a very important practice we undertake in Physics. There are situations where we can combine multiple equations in order solve problems that don’t seem to have a solution.

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