Most motion we observe in life does not just happen in a single
direction. Most motion we observe needs at least two dimensions to describe
it.
Go to:
http://www.walter-fendt.de/ph14e/projectile.htm and familiarize yourself
with the controls. You will only want to change the initial height, initial
speed, and angle of inclination when working with this applet. You will also
need to use the 'Start' and 'Reset' buttons to watch the projectile move and
clear it so that you can change the controls and watch a different
trajectory. Finally, you can change what type of information you are
observing with the bubbles on the bottom-right side of the applet. The
position setting will tell you the horizontal and vertical positions and
maximum distances as well as the time; the velocity setting will tell you
the velocity components, the total velocity, and the angle of inclination of
the objects motion; the acceleration setting will tell you the objects
acceleration. You can also click the 'Slow Motion' check box to be able to
see what is happening as the projectile moves.
Select the position setting and launch projectiles with different initial
heights, initial speeds, angles of inclination, and masses. Increasing which
setting(s) will always increase the maximum height reached by the
projectile? (select all that apply)
Initial height
Initial speed
Angle of inclination
Mass
None
Increasing which setting(s) will always decrease maximum height
reached by the projectile? (select all that apply)
Initial height
Initial speed
Angle of inclination
Mass
None
Increasing which setting(s) will always increase the maximum
distance reached by the projectile? (select all that apply)
Initial height
Initial speed
Angle of inclination
Mass
None
Increasing which setting(s) will always decrease maximum distance
reached by the projectile? (select all that apply)
Initial height
Initial speed
Angle of inclination
Mass
None
Increasing which setting(s) will always increase the amount of
time the projectile is in the air? (select all that apply)
Initial height
Initial speed
Angle of inclination
Mass
None
Increasing which setting(s) will always decrease the amount of
time the projectile is in the air? (select all that apply)
Initial height
Initial speed
Angle of inclination
Mass
None
Now select the velocity setting and launch projectiles with different
initial heights, initial speeds, angles of inclination, and masses. Which
value stays consistent throughout the flight of the projectile? (select all
that apply)
Velocity in the x direction
Velocity in the y direction
Total velocity
Angle of inclination
None
What does the answer above mean?
Select the acceleration setting and launch a projectile. What is causing the
acceleration?
FEEDBACK
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Was there anything that you didn't understand in the reading assignment?
What was confusing to you?
General Comments: