Vu Nguyen, Brandon and Helina

1. Theta (θ) Group present:
Physic 2010 midterm project:
“Angry Birds”
A 2-D kinematic projection.
Member:
Vu Nguyen, Brandon McGinnis and Helina Mekuria

2. y
Initial position:
x=0 and y=0
O x

3. y
O x

4. 2D-Kinematic Equations
X Y
Uniform motion Accelerated motion
ax = 0 ay = -g = 9.81 m/s2
ACCELERATION
VELOCITY
DISPLACEMENT

5. y
(divide both side by t)
O
x

6. y
O
x

7. Experimental
Ping-Pong Cannon
Data on the next slide

8. 2.5 Sin(2θ) vs Range
0.87, 2.03 0.98, 2.31
2 y = 2.382x - 0.023 0.98, 2.35
0.64, 1.53
0.87, 2.01
1.5
Range
0.64, 1.49
1
0.5
0
0 0.2 0.4 0.6 0.8 1 1.2
Sin(2θ)
Angle (degree) sin(2θ) Range (m)
20 0.64 1.53
30 0.87 2.01
40 0.98 2.31
50 0.98 2.35
60 0.87 2.03
70 0.64 1.49

9. 2.5 Sin(2θ) vs Range
0.87, 2.03 0.98, 2.31
2 y = 2.382x - 0.023 0.98, 2.35
0.64, 1.53
0.87, 2.01
1.5
Range
0.64, 1.49
1
0.5
0
0 0.2 0.4 0.6 0.8 1 1.2
Sin(2θ)
θ (degree) Sin(2θ) θ (degree) Sin(2θ)
•CONCLUSIONS:
20 0.64 70 0.64
30 0.87 60 0.87
•Horizontal range is greatest for the
throw angle of 450
40 0.98 50 0.98
0 0.00 90 0.00 • Horizontal ranges are the same for
angles θ and (900 – θ)
45 1.00 45 1.00

10. 4.83 /
70 20 respectively. How do you get them to land on the same
position at the same time?
Red bird Yellow bird
Given: Initial
velocities
Shooting
angles
Ranges
Times

11. 0.60 sec
The yellow bird will be fired after the
red bird 0.60 seconds, then they will
land on the same position at the same
time
Yeah!!

12. Thank you for watching
Any question?