Terminal Velocity Lab Report 
Background Information
Terminal velocity is when a falling object reaches a constant velocity due to a balance in the forces of weight and air resistance. In this experiment, we dropped marbles of difference weights in 100 ml of oil to calculate their terminal velocity.
Research Question
How does the mass of an object effect its terminal velocity?
Aim
Our aim is to measure the terminal velocity, of marbles of different masses, in oil. hypothesis Objects of larger mass will take longer to reach the bottom of the cylinder, whereas objects of lesser mass will take less time to reach the bottom of the cylinder.
Variables
Independent Variable: Volume of oil
Dependent variable: Time taken
Controlled variable: Weight of marbles
Apparatus & Materials
1. Measuring cylinder
2. Oil
3. Weighing machine
4. Marbles of different sizes
5. Timer
6. Paper
7. Pen
8. Calculator method & procedure
1. Get apparatus ready on a clear table.
2. Get
Data
Calculations
Time taken*length of cylinder = terminal velocity
Small marble
1st trial – 0.002*18 =0.036
2nd trial – 0.015*18 =0.27
3rd trial – 0.016*18 =0.288
4th trial – 0.035*18 =0.063
Average: 0.657/4 = 0.16425
Medium marble
1st trial – 0.015*18 =0.27
2nd trial – 0.056*18 =1.008
3rd trial – 0.028*18 =0.36
4th trial – 0.02*18 =0.36
Average: 1.998/4 =0.4995
Large marble
1st trial – 3.35*18 =60.3
2nd trial – 3.38*18 =60.84
3rd trial – 3.13*18 =56.34
4th trial – 3.11*18 =55.98
Average: 58.365
data analysis
The first graph shows how the time taken to reach the bottom of the measuring cylinder increases with increasing mass.
The second graph shows that the terminal velocity, too, increases as the mass of the marble increases. conclusion The results of this experiment prove our hypothesis correct.
Our hypothesis predicts the terminal
Terminal velocity is when a falling object reaches a constant velocity due to a balance in the forces of weight and air resistance. In this experiment, we dropped marbles of difference weights in 100 ml of oil to calculate their terminal velocity.
Research Question
How does the mass of an object effect its terminal velocity?
Aim
Our aim is to measure the terminal velocity, of marbles of different masses, in oil. hypothesis Objects of larger mass will take longer to reach the bottom of the cylinder, whereas objects of lesser mass will take less time to reach the bottom of the cylinder.
Variables
Independent Variable: Volume of oil
Dependent variable: Time taken
Controlled variable: Weight of marbles
Apparatus & Materials
1. Measuring cylinder
2. Oil
3. Weighing machine
4. Marbles of different sizes
5. Timer
6. Paper
7. Pen
8. Calculator method & procedure
1. Get apparatus ready on a clear table.
2. Get
Data
Calculations
Time taken*length of cylinder = terminal velocity
Small marble
1st trial – 0.002*18 =0.036
2nd trial – 0.015*18 =0.27
3rd trial – 0.016*18 =0.288
4th trial – 0.035*18 =0.063
Average: 0.657/4 = 0.16425
Medium marble
1st trial – 0.015*18 =0.27
2nd trial – 0.056*18 =1.008
3rd trial – 0.028*18 =0.36
4th trial – 0.02*18 =0.36
Average: 1.998/4 =0.4995
Large marble
1st trial – 3.35*18 =60.3
2nd trial – 3.38*18 =60.84
3rd trial – 3.13*18 =56.34
4th trial – 3.11*18 =55.98
Average: 58.365
data analysis
The first graph shows how the time taken to reach the bottom of the measuring cylinder increases with increasing mass.
The second graph shows that the terminal velocity, too, increases as the mass of the marble increases. conclusion The results of this experiment prove our hypothesis correct.
Our hypothesis predicts the terminal