Original Lesson retrieved from www.teachengineer.org
Adapted by Dr. Jennifer L. Bell, LaGrange High School, LaGrange, Georgia (© 2010)
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2 sheets of paper
2 drinking straws
2 pairs of scissors
Stopwatch
A tape dispenser (You will need to share with another
group if your group does not have one.)
**To convert inches to feet with decimals, divide the
number of inches by 12. Round to the nearest hundredth.
Buddy A
Height
Initial
Maximum
(vertex)
(launching height)
8 ft.
Time
(to the nearest tenth of
a second)
0 sec.
Buddy B
Height
(launching height)
8 ft.
Time
(to the nearest tenth of
a second)
0 sec.
time
based on 32
ft/s2 gravity
initial
velocity
initial
height
-16(_______)2 + vo (_______) + (_______) = 8
vertex’s time
launching
height
-16(_______)2 + vo (_______) + (_______) = 8
h(x) = -16t2 + (_______) t + (_______)
initial
velocity
launching
height
h(x) = -16t2 + 13.5t + 5.25
 b  b  4ac
x
2a
v
2
v
v
v
maximum height
(vertex)
equal time
ground level
equal time
9
Height (in feet)
8
7
6
5
4
3
2
1
0
0.5
1
1.5
Time (in seconds)
2