Motion 1: Acceleration
Answer the following in order on notebook paper.  Show how you set up the solution to assigned problems.

Define: Acceleration.
 

By examining a position-time graph, how can you tell if an object is accelerating or traveling at constant velocity?  How can you tell if it is speeding up or slowing down?
 
 
 

By examining a velocity-time graph, how can you tell if an object is accelerating or traveling at constant velocity?  How can you tell if it is speeding up or slowing down?
 
 

Fill in the table below with the kinematic equations.  List the common variable(s) found in all equations, then list those other variables found in the equation.
 
 
 

Equation Common Variable(s) Other Variables
 
 
 
 

For each of the problems in “practice 2E on p. 58, determine which equation would be needed to solve it.
 
 

Define:  free fall  g
 
 

Examine the balls pictured in figures 2-15 a and b.  Compare their motion in terms of velocity, acceleration, distance and time.
 
 

Look at the graph on p. 61.
a. How does acceleration compare above and below the v = 0 line?
 

b. What does the straight line tell you?
 

c. What is the velocity when t = 1.10s?
 
 

What happens to an object with a positive velocity and a negative acceleration?  What happens to an object with a positive velocity and a positive acceleration?
 
 

Read: “Time Dilation,” p.66 - 67.  Answer the following questions:
a. In what respect is light different that all other phenomena?
 

b. What proof exists that time dilation is an actual physical effect?
 

c. This phenomenon may be related to such sci-fi stories as “Time Machine,” “Back to the Future,” and “Clock-Stoppers.”  If you could time travel, where would you go? Why?
 
 
 


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