1. Physics 1 – Sept 25, 2018 P3 Challenge –
Draw a position vs time graph that corresponds to the following velocity vs time graph.
Lab activity due today by end
of day

2. Objectives and Agenda Objective Agenda Assignment:
Review day
Agenda
Time to work on review worksheet
Assignment:
Work with study guide and review worksheet to review (Test on Thursday 9/27)

3. IB 1.1 Objectives – Measurement in Physics
Measuring
Significant figures
Scientific Notation
Calculations with sigfigs
Standards
Metric units
Unit conversion
Dimension Analysis
Estimation

4. IB 1.2 Objectives – Uncertainties and Errors
Sources of error
Accuracy and Precision
Data Analysis (ave and std)
Error propagation: add/sub, mult/div, exponents and roots
Error in Graphs
Lab activity (density of water graph)

5. IB 2.1 Objectives – Motion (1 Dimensional)
Position, Displacement and Distance
Average speed, average velocity
Instantaneous velocity
Acceleration
X vs t graphs
V vs t graphs
Constant acceleration problems
Freefall
Lab activity (ruler reaction time)

6. Vocabulary Standard Estimate Order of magnitude Dimensional analysis
Mantissa
Accuracy
Precision
Systematic error
Random error
Range
Standard deviation
Absolute uncertainty
Fractional uncertainty
Percent uncertainty
Error propagation
Percent error
Error Bar
Gradient
Position
Displacement
Distance
Speed
Velocity
Scalar
Vector
Average velocity
Instantaneous velocity
Acceleration
g , gravity

7. Memory Items
The five most common metric prefixes (k, d, c, m, μ)
Meter stick equivalences
mL conversions
1 in = 2.54 cm
Density of water = 1.0 g/mL
g = m/s2
Variables for constant acceleration, and their units
v = 0 at top of motion and other freefall features
Std Dev steps
1 m = 100 cm
1 mL = 1 cm3 = 1 cc
1 m = 1000 mm
1 g of water = 1 mL
1000 m = 1 km
applies to L and g also

8. Skills – 1.1 Measurement in physics
Measure mass, distance or volume with lab equipment using the correct level of uncertainty
Convert between scientific notation and standard notation
Calculate with significant figures (count, add/sub, mult/div)
Perform dimensional analysis using equivalences to do unit conversions
Convert SI metric units
Answer questions to one sig fig and order of magnitude estimates

9. Skills – 1.2 Uncertainty and Error Analysis
Identify sources of error for a laboratory procedure
Determine accuracy of a data set using average and percent error
Determine precision of a data set by using the rule of “½ the range” or a standard deviation
Report uncertainties to one sigfig and round values to the decimal point indicated by the uncertainty

10. Skills – 1.2 Uncertainty and Error Analysis
Calculate the absolute uncertainty, fractional uncertainty or percent uncertainty for a measurement
Propagate uncertainties through calculations involving addition/subtraction, multiplication/division or exponents/roots
Evaluate the uncertainty present in the plotted points, gradient and y-intercept of a graph using error bars and min/max/best lines

11. Skills – 2.1 Motion ( 1 dimension)
Distinguish between position, displacement and distance
Distinguish between speed and velocity
Calculate average velocity
Determine the direction of acceleration
Interpret and draw position versus time kinematic graphs
Interpret and draw velocity versus time kinematic graphs
Solve constant acceleration problems
Solve freefall motion problems

12. Test Description 13 x 2 pts Multiple Choice
8 pts Short answer calculations
26 pts Graphing (4 x 3 pts Basic x vs t and v vs t + 8 pts combined problem + 6 pt Graph Error Analysis)
3 x 3 pts Error Propagation
3 pt Estimation
2 x 4 pt Constant velocity problems
4 x 5 pts Constant acceleration problems

13. Exit Slip - Assignment No Exit Slip
What’s Due? (Pending assignments to complete.)
Work with study guide and review worksheet to review
What’s Next? (How to prepare for the next day)
Test on Thursday Sept 27.