Motion and Energy
2.1 Motion
Frame of reference
motion depends on observer’s frame of reference
An Earth Event
A Space Event
Measuring Motion
Speed - distance an object travels in a certain amount of time
Velocity speed and direction of an object’s motion
Constant Speed - equal distances are covered in an equal amount of time.
Average Speed - equal to the distance divided by total time.
Practice problems page 36
Relativity and Space-Time
Calculating Sunlight Travel Time
Motion Changes with the Times
Science and Technology
Flight
2.2 Acceleration
Change in Velocity
formulas
positive acceleration
negative acceleration
change in direction
A Racer’s acceleration
Practice problems page 42
Motion in a circle
Centripetal acceleration
Science and Society
Skid - Mark Evidence
Life Science Link, pg. 44 of textbook
2.3 Energy of Motion
Energy and Change
Potential energy
G.P.E. = mgh
Kinetic Energy
K.E. = mv 2
2
Conservation of Energy
Law of Conservation of Energy
Gravity and Energy
a rock slide
Science and Technology
Great Potential
Water wheel
Dam
Activity 2
How can you change the speed of a rocket ?
Pre Lab
Data Record
Table speed measurements
Procedure
Analysis
Conclusion