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?

Copyright Alexplorer. Some items taken from or adapted from other materials. This page is free for use in a classroom setting.

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