Introduction:
This lab is an experiment in terminal velocity, the speed an object cannot surpass due to frictional forces. To begin, it is important to note that the objects in this lab are not in a free-fall scenario. A free-fall scenario is a situation where an object is dropped in a frictionless environment, and the only force that is acting upon it is the force of gravity. In a free fall environment, terminal velocity would not occur, because no frictional forces would act on the object to stop it from continuing to accelerate. It this lab situation, the force of friction (air resistance) has an effect on the falling object. The air resistance (force of friction) that causes terminal velocity is caused by a few things. The mass, the density of the air, and the surface area all have an impact on how much air resistance there is. In this lab, because the density of the air in the school is relatively constant and should not change during the experiment, we can ignore that value (it is constant). The surface are should not change either (the cupcake liners are stacked), so we can also ignore that value. We choose to measure the mass of the cupcake liners because that is the only factor in air resistance that will change throughout this experiment. In conclusion, terminal velocity is caused by air resistance, which is caused by mass. Purpose:

The purpose of this lab is to investigate the causes of terminal velocity, specifically the relationship between terminal velocity, mass, and air resistance. Materials:
-20 “Giant Cupcake Liners”-3 timers
-String-metre stick
Procedure:
See assignment sheet

Results:
See assignment sheet for table of values

Discussion:
1. Using your graphical analysis techniques, straighten out the graph of velocity vs. mass and determine the relationship between terminal velocity and mass. Write this relationship as a variation statement.

...Laboratory – TerminalVelocity
Introduction:
Consider dropping a piece paper and a brick from the same height. Although in theory they should both strike the ground at the same time; in practice the brick will always strike the ground first. The reason is because of air resistance. As the paper falls to the ground air resistance is pushing the paper up, this slows the acceleration of the paper.
It is known that as the velocity of an object increases the air resistance acting on the object increases. If we consider jumping out of a plane and free fall towards the Earth the F.B.D. would be as follows:
Now the force of gravity acting on the object does not change, however as we speed up towards the Earth the force of air resistance is increasing. Eventually there reaches a point when the Fg = Fair when this occurs we are no longer accelerating towards the Earth, but fall with a constant velocity that is called the TERMINALVELOCITY.
The terminalvelocity of an object in free fall depends on two main factors:
1. The mass of the object
2. The surface area exposed to the air resistance
For example: A human free falling towards Earth has a terminalvelocity of 190 km/h. If you use a parachute the terminalvelocity is about 20 km/h.
If we were to observe this motion on a speed time...

...
Background Information
Terminalvelocity 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 terminalvelocity.
Research Question
How does the mass of an object effect its terminalvelocity?
Aim
Our aim is to measure theterminalvelocity, 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 = terminalvelocity
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...

...less acceleration and once the air resistance is stronger then the terminalvelocity that is when the object is going at a small velocity.
TerminalVelocity
When there is equal force acting on an object when falling such as gravity and air resistance at that stage it is called constant speed or terminalvelocity. When the object is dropped the force of gravity initially is 100% but as it falls the air resistance becomes stronger making the gravity weaker and at one stage there will be terminalvelocity. In some cases due to the mass and weight of an object and the height they fall the terminalvelocity may be quicker or slower.
The Ant and The Man
When the man falls from the 10 story high building and splats to the ground this is because of his fall. When he falls due to the weight of him he falls quicker and gravity has a stronger force on him and air resistance doesn’t and in reality he may not even reach the terminalvelocity or he may reach it near to the ground and hence he is accelerating at a high rate off the building making him splat on the floor.
However when the ant falls from the table which in comparison to the ants height an 100 story building when the ant falls he survives on the floor. This is also linked with the timing of the terminal...

...Velocity and Acceleration (Video Analysis)
NAME
Abstract:
With using the new software this lab was different than the rest. We determined many solutions using video analysis. We used a frictionless track with a “car” and recorded using loggerpro software. We used this software to determine average velocity and instantaneous velocity. With this information we than discovered the average acceleration, mine was .2115. After that we were able to find δa, then finally the free-fall acceleration, I got 1.693. Overall this was a fun and difficult experiment, but I learned a ton about acceleration and velocity.
Introduction:
The average person might hear the word physics and have no idea what it really means. The formal definition is; a science that deals with matter and energy and their interactions. Now that definition is nice and short, and doesn’t explain into too much detail, but that is the gist of it. And hopefully can help you understand this lab a little bit more. The next question an average person is going to ask is when is this even used in real life? But there are many examples, for one; 2-d vectors and projectile are used when using a cannonball, or any other ball flying through the air, every motion on a flat surface. Another example is hitting a golf ball, which can be in kinematics or in dynamics. If only motion of a golf ball is discussed, with terms like...

...E102-MOTION ALONG A STRAIGHT LINE
GUIDE QUESTIONS:
1. From the data obtained, what is the effect of the height of the track to the cart’s acceleration?
The data shows that sinӨ, which is dependent on the height, is getting higher as acceleration is increasing. This implicates that when object is at higher altitude, its acceleration is faster.
2. From the data obtained, how is time, t related to the inclination of the track? Explain why?
Time and position of velocity are interrelated to each other and the height and gravitational pull affects the acceleration of a moving and a free falling object.
3. From the data obtained, how would you account the difference between the picket fence’s acceleration and the value of g?
The value of the slope of a graph of average velocity versus time will be the acceleration due to gravity of the falling object.
E102-MOTION ALONG A STRAIGHT LINE
PROBLEM:
1. A police car is searching for a fugitive that managed to escape a while ago. Knowing that he is now safe, the fugitive begins to take a rest until he notices a police car approaching him at 10 m/s, accelerating at 5 m/s2 and it is 100 m away. The fugitive grabs a motorcycle and stars it accelerating at the same rate as the police car. How much time will it take the police car to catch the fugitive?
x = xo + vot + 1at2
2
xpolice = 0m +10m/s (t) + 0.5(5m/s2)t2
xfugitive...

...
Centro de investigación y desarrollo de educación bilingüe (CIDEB)
Physics
LAB REPORT
Uniform Rectilinear Motion
Teacher: Patrick Morris
Alejandra Castillejos Longoria
Group: 205
ID: 1663878
Abstract
The purpose of this experiment, was to prove the concept of the uniform linear motion by using an air track. With this, we demonstrated the impulse and change in momentum, the conservation of energy and the linear motion. We basically learnt to calculate the distance/time, acceleration/time, and velocity/time and graph it. The air track is also used to study collisions, both elastic and inelastic. Since there is very little energy lost through friction it is easy to demonstrate how momentum is conserved before and after a collision. According to the result, the velocity of the object in the air track was constant, it means that it didn’t have acceleration because it has constant velocity.
Introduction
First of all; we should understand what is linear motion. Linear motion is motion along a straight line, and can therefore be described mathematically using only one spatial dimension. Uniform linear motion with constant velocity or zero acceleration. The Air Track can be used to obtain an accurate investigation of the laws of motion. A car or glider travels on a cushion of air provided which reduces friction. Since the friction is...

...Kathryn Marchessault
Physics Lab LR
Tuesday 8-9:55
Due 02/26/15
Experiment #1
Free Fall Experiment
Abstract
In this experiment we studied the motion of an object in free fall, that is an object being dropped from a certain height to Earth’s surface. In this experiment we tested the idea that no matter what the size, shape, color, etc. of the object if it would still experience the same constant acceleration throughout its fall (short distance). The constant downward acceleration it experiences is due to Earth’s gravitational force (g). We measure the position, and velocity of a ball to get the experimental g. We then measured reaction time with a ruler. We used our data and g, to get an average distance and time.
Report Questions
1. The parabolic curve opens upward in the position vs. time graph, because this graph is measuring the position of the ball from the sensor. The ball is at first falling down and then bounces back up. This would cause the ball to move away from its original position, downward, and then as it hits the floor and bounces back up the graph would show this by curving back up to its original position.
2.
The slope of the velocity vs. time graph represents the acceleration of the object. If you were to take the derivative of this graph, you would get the graph for acceleration vs. time. Since the object shows the velocity graph as a straight increasing line, this shows that the slope...

...static friction force vs. the normal force is .391. The slope is the coefficient of static friction. It is found by dividing (largest average – small average)/ (largest normal force – smallest normal force). Since it’s impossible to divide by zero, Fn can’t equal zero which means that a line fitted to these data can’t pass through the origin. The coefficient can also not have a value of zero.
7. See graph. The slope if the coefficient of kinetic friction. It is found by dividing Fn from Fk. Since it is impossible to divide by zero, Fn can’t equal zero which means that a line fitted to these data can’t pass through the origin. The coefficient can also not have a value or zero.
8.
Conclusion:-
In conclusion, the purpose of this lab was to determine the relationship between the force of static and kinetic friction and the weight of an object. We did this by using a block of wood and a set of weight. By using a motion detector and force sensor, we were able to determine the forces of static and kinetic friction of the block with and without weights. For part II, we completed many trials pulling the block with various weights on it across, increasing the weight with each set of trials. From doing this we measured the forces of the kinetic and static friction for each weight. For part III, we pushed the block with and without on additional mass of 500g across, this time measuring the acceleration. We were able to calculate the coefficient of kinetic...