Vocabulary :
Vocabulary acceleration
Definition: The rate of which an object changes it velocity
Context: Acceleration can be positive or negative depending on whether the object is speeding up or slowing down.
force
Definition: A push or a pull exerted on an object
Context: The ball was hit with enough force to send it into the bleachers.
friction
Definition: A force that resists motion between two bodies in contact
Context: Rougher surfaces create more friction than smooth ones when an object comes in contact with them.
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Slide 3:
gravity
Definition: The natural force that attracts any two objects with mass toward each other
Context: Earth’s gravity pulls on anything that is not held up by some other force.
speed
Definition: The rate of motion
Context: The speed of the ball is determined by measuring how far it travels in a certain amount of time.
velocity
Definition: The speed of an object moving in a specific direction
Context: The car’s velocity was 55 miles per hour, eastbound
Note-taking worksheet :
Note-taking worksheet Speed
Average
Instantaneous
Constant ……………… same
Average speed
Slide 5:
B velocity
Acceleration
Speed
Section 2
Force
Changes
Balanced
Unbalanced
net
Slide 6:
Laws of motion
Constant
a. Friction
b. Inertia
net………..net
opposite
Key Terms wkst pg. 20 :
Key Terms wkst pg. 20 Force
Motion
Acceleration
Velocity
Skip
Skip 7. Average speed
8. Friction
9. Skip
10. Net force