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Science 10Mrs. Knowles
Physics Part 1: Solving equations
Time interval: difference between _______________ and _____________.
Symbol:______________
Calculating Vectors:
**Because they measure _________ AND _________, we must have a way to represent the direction.
This is done using the symbols _________ and _______.
Must define which direction is + and which is - .
Examples:
Scalar
Definition:
Examples:
Vector
Definition:
Symbol:
Examples:
Science 10Mrs. Knowles
1. Distance & Displacement
Distance: is a ___________ number that means how much __________________ an object has covered.
Displacement: is a ___________ number that means how far the object is from _____________________________________________.
Symbols to know:
di :
df :
d :
Calculating d :
Example:
What is the distance of a 100 m sprint running forward? What is the displacement of a 100 m sprint running forward?
d=
d=
Science 10Mrs. Knowles
What is the distance of a 400 m run around the track? What is the displacement of a 400 m run around the track?
d=
d=
A boat travels 60 m East, then turns around and travels 85 m West. What is the distance? What is the displacement?
Displacement Activity: Map out a path (on the attached paper) for your partner to walk and measure their distance and calculate displacement.
CHECKPOINT:
Science 10Mrs. Knowles
2. Speed & Velocity
Speed is a ______________. It is the _________ travelled during a given period of time divided by the time. Measured in m/s.
Velocity is a ______________. It is the ____________ during a given period of time divided by the time. Measured in m/s.
Constant Velocity: the _________ and _________ of an object is not changing.
Positive velocity: moving ______________ starting position.
Negative velocity: moving ______________ starting position.
Zero velocity: ______________
Calculations: use the formulas:
Example: What is a sprinter’s average velocity if it takes her 8.2 s to run 75 m forward?
Science 10Mrs. Knowles
Example: What is the displacement of a skateboarder who travels 3.5 m/s West for 12 s?
Example: If a cyclist travels south at 12 m/s, how long would it take the cyclist to travel 600 m south?
CHECKPOINT:
CHECKPOINT:
COMPLETE PRACTICE PROBLEMS ON PAGE 370
Science 10Mrs. Knowles
3. Acceleration: a change in _____________.
V :
Vi
Vf
Example 1: You start riding a bicycle at 6 m/s but then you start going down a hill and you increase your velocity to 9 m/s. What is your change in velocity?
Vi =
Vf =
V=
Example 2: You are running at 4 m/s but then you get a cramp and you can now only run at 1 m/s. What is your change in velocity?
Example 3: During a 800m race, you begin the race running at 5 m/s and you end the race running at 5 m/s. Calculate V.
Science 10Mrs. Knowles
How can we change velocity?
1.
2.
Example 1: A car moving at 50km/h accelerates to 60km/h in 7.0 seconds. Determine its acceleration.
Positive acceleration: an _____________ in velocity
Negative acceleration: a ____________ in velocity
CHECKPOINT
Science 10Mrs. Knowles
CHECKPOINT
CHECKPOINT
CHECKPOINT