1. CP physics
Good morning! Please…
• Take your cheat sheets, to be checked
• Answer the warm-up question:
– A baseball is thrown straight down from a building that is 65
meters tall from rest. What will its velocity be right before it
hits the ground?
2. agenda:
1. Word Wall
2. Cheat Sheet: you cannot have sample problems done out
3. Review notes & questions
4. Projectile motion review
5. Review activity
Reminders:
1. RE-taking your HOT Task? Come after school, check with me a date
that works for you
1. Last day: WEDNESDAY THIS week
3. Midterm topics
Topics Suggested Study Techniques
1. Conversion, measurement, • Look over all old tests & know
precision, accuracy how to do every problem
• Go over your notes from each
2. One-dimensional motion:
unit – be familiar with concepts
constant speed
• Re-do problems from the
3. One-dimensional motion: homework & problems from the
accelerated motion review sheet
4. Free-fall motion Format:
5. Vectors • 30 multiple choice
• 14-15 problems with multiple
6. Projectile motion parts
7. Forces & Newton’s laws
4. 1. Conversion, measurement,
precision, accuracy
• Using factor label method to convert numbers
• What are some examples of SI units used in physics? English units?
• What are the significant figures for the following two numbers:
– 0.02003 54300
• What is precision? What is accuracy?
• How to convert between metric units
– Know kilo- to milli-
5. 2 & 3. One-dimensional motion:
constant speed & Acceleration
• Graphing motion
– Identifying the information given on an x vs. t, v vs. t, a
vs. t graph
• Slope of the lines on the graphs
• Area under the curve
• Solving problems using one-dimensional motion equations
7. 4. free-fall motion
• The acceleration of an object in free-fall
• Using motion equations to solve free-fall
problems:
– An object dropped from rest
– An object dropped with an initial velocity
8. 4. free-fall motion
• Sample problem: a ball is dropped with an initial velocity of
12.0 m/s.
– What will be the velocity of the ball after 2.0 seconds?
– If it takes 5.5 seconds for the ball to hit the ground, how
tall is the building?
-31.6 m/s
9. 5. vectors
• Difference between scalar and vector quantities
– What are some examples of each?
• Breaking vector into its components
• Solving for resultant vectors by adding or subtracting two
vectors that are at a right angle to one another.
10. 5. Vectors
• Draw the following vectors:
– 5 meters at 30 degrees south of west
– 10 meters at 25 degrees east of south
11. 6. Projectile motion
• Concepts behind projectile motion
– Projectile motion is anything that has an initial horizontal velocity
that is under the influence of free-fall
– X & y dimensions of motion are completely independent of one
another
• What happens in the x-direction?
• What happens in the y-direction?
• What is range? At what angle does any object have
maximum range?
• Problems with initial horizontal velocity
• Problems with projectiles launched at an angle.
12. 7. Forces
• Newton’s laws and how they apply in various situations
– What is Newton’s first law? Second law? Third?
• Drawing free-body diagram
• Problems with friction on an inclined plane
• Problems with friction on a level surface
• Calculating coefficients of kinetic and static friction.
13. 7. Forces
• A student moves a box of books down the hall by pulling on
a rope attached to the box. The student pulls with a force of
185 N so that the box moves with a constant velocity. If the
mass of the books is 35.0 kg, calculate the coefficient of
kinetic friction between the box and floor.
14. 7. Forces
• What is the net force on each object?
FN = 10 N
Ff = 3 N Fa = 5 N
Mg = 10 N
FN = 10 N FN = 10 N
Ff = 3 N Fa = 1 N Ff = 3 N Fa = 3 N
Mg = 10 N Mg = 10 N
