Shown below are the data and graphs for three objects dropped off a tall buildin
ID: 2262729 • Letter: S
Question
Shown below are the data and graphs for three objects dropped off a tall building. Discuss the motion for each object. Include any relevant details about acceleration and air resistance.
ti
object 1 position (m)
object 2 position (m)
object 3 position (m)
times(s) 1
4.9
2.45
0.5
2
19.6
9.8
1
3
44.1
22.1
1.5
4
78.4
39.2
2
ti
object 1 position (m)
object 2 position (m)
object 3 position (m)
times(s) 1
4.9
2.45
0.5
2
19.6
9.8
1
3
44.1
22.1
1.5
4
78.4
39.2
2
Explanation / Answer
Object 1:
No air resistance.
x = (1/2)gt^2 is followed.
acceleration = g = 9.8 m/s^2
Object 2:
x = (1/2)(g/2)t^2 is followed.
acceleration = g/2
Net force = mg -mg/2 = mg/2
Air resistance = mg/2
Object 3:
Moving at constant velocity of 0.5 m/s.
No acceleration.
Net force is zero.
Air resistance = mg
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