Module 3: Projectile Motion
Enabling Assessment 2
Worksheet on Projectile Motion
Name
Date
Teacher
CYS
Points
60 points
Time Allotment
45 minutes
DATA SHEET: Place all your data on the table provided.
Part 1A (20 pts)
Initial velocity = 12 m/s
Height of Canon=3m
Angle
Range
(using
simulator)
Range
(calculated)
o
30
16.67
16.73
o
35
17.22
17.20
o
40
17.42
17.46
o
45
17.23
18.66
o
50
16.64
16.66
o
55
15.65
15.62
Solution for Range
(calculated)
Score
o
60
14.26
14.28
o
65
12.5
12.5
o
70
10.42
10.42
o
75
8.07
8.08
Angle at which range is maximum:
45˚
S-EPHY 001 LA PHYSICS FOR ENGINEERS LABORATORY
Module 3: Projectile Motion
Part 2A (20 pts)
12 m/s
Initial velocity = ____________________
Height of Canon = __________________
9m
Range
(calculated)
Angle
Range (using
simulator)
o
30
21.8m
21.82m
o
35
21.89m
21.92m
o
40
21.63m
21.60m
o
45
20.98m
21.47m
o
50
19.93m
19.98m
o
55
18.49m
18.52m
o
60
16.67m
16.68m
o
65
14.5m
14.45m
Solution for Range (calculated)
o
70
12.01m
12.03m
o
75
9.25m
9.26m
Part B (10pts)
Height, m
Angle, degrees
Velocity, m/s
Range, m
2
20
16
21
8
5
15
21
2
10
20
21
***Observe three stars when the material hit the target
Discussion of Results (6 pts)
The ranges from the stimulator and calculated in Part 1A were reasonably similar. The
experiment has a fixed initial velocity, whereas the height is modified to have a variable along the
Y component. Additionally, the stimulator provided the required time, accordingly, the formula for
computing the range is obtained from the x displacement wherein 𝑋 = 𝑉0 cos 𝜃 𝑡.
The results from Part 2A are comparable to the value of range based on the simulator.
There is no direct formula for range that accommodates with the given height of the canon as well
as the total time flight. Thus, the first formula used to get the time (t) is derived from the
displacement (y) formula then substitute the time (t) to the formula of 𝑋 = 𝑉0𝑥 𝑡 wherein 𝑋 =
𝑉0 cos 𝜃 𝑡. It could have a miniscule probability of miscalculation depending on the significant
figures or decimal places, still, the computed ranges are very much similar.
Conclusion (4 pts)
The experiment illustrates trajectory plots for various launch angles with the same initial
velocity. It shows that the launch angle affects the projectile's maximum height, duration in the
air, and horizontal range. The greater the launch angle, the longer the time in the air, as time in
the air is determined by the initial vertical velocity.
The stimulator's overall results were rather near to the computed results; the primary
difference is that the stimulator saves time by not having to compute the problem; however, if
the problem is solved manually for verifying, the accuracy will be higher than with the stimulator.