Lab 2 Kinematics PHY250L”
Student Name: Annie Burns
Access Code (located on the underside of the lid of your lab kit): AC-8PYXXK
Lab Report Format Expectations
Utilize college level grammar and formatting when answering text based questions.
Report all equations in a proper mathematical format, with the correct signs and symbols.
Submissions with incomplete or improperly formatted responses may be rejected.
Pre-Lab Questions
1. What is the acceleration of a ball that is vertically tossed up when it reaches its maximum
height?
9.8m/s^2.
2. Describe what the slopes of a position vs. time graph mean in relation to velocity.
The slope of the position vs a time graph gives the velocity, and the magnitude of the slope can
tell us how fast an object is moving. Whether it is positive or negative indictes which direction it
is moving in.
3. State the 1D and 2D kinematics equations you will use in this lab in variable form. (Do not state
equations that you will not use.)
Displacement equation- d = V0T +1/2at^2
4. Final Velocity equation- Vf = V0 +at
5. Final Velocity Squared equation = Vf^2 = V0^2 + 2ad
6. df= 1/2gt^2
7. Why is it important to consider the X and Y components of the kinematics equations
independently?
Using the X and Y components independently can avoid errors and allows for a more accurate
anaylysis of motion.
,Lab 2 Kinematics PHY250L”
EXPERIMENT 1: FREE FALL CALCULATIONS
Introduction Questions
1. This experiment contains two separate tasks: one where you will drop two strings with hex nuts
tied at varying intervals, and another where you will drop a single hex nut from a specific height.
In your own words, explain the steps you will take in preparing the ropes for the first task. Your
lab will not be graded without a detailed explanation that reflects your understanding of the
preparation for this experiment.
I will get a string and measure it to 2.5 m. I will take the hex nuts and tie them to the string each
40 cm apart until reaching the end of my string. I will hold the string over the pan to make sure
the hex nuts are not moving. I will then begin the experiment.
2. What measurements will you be required to take during this experiment?
I will measure the drop time and height of the drop for 3 consecutive times to find the average
3. If you drop a ball, and then one second later drop a ball identical in mass, size and shape, what
happens to the distance between them as they fall? The answer to this question is integral to
understanding the rest of the lab, so ensure you have a full understanding of it before
answering.
When you drop the second ball, the distance between them increases as they fall. This happens
because the first ball has been falling longer, so in turn it has built up a greater speed due to
gravity. Both balls accelerate downward at the same rate but the first ball will always be moving
faster.
4. How do you think Question 3, above, pertains to this experiment?
It is important to understand how constant acceleration will affect objects falling from a certain
height. Since we are dropping hex nuts at different distances from the ground, it is important to
know how gravity might affect our experiment.
5. From what height will you drop the single hex nut?
I will drop the hex nut from 1.7m.
6. Using the kinematics equations, calculate the length of time it will take the single hex nut to
land, given the height that you provided. You must show the specified portions of the
calculation:
a. State the kinematics equation you will use in variable form. It must be legible and have
the proper formatting.
df=1/2gt^2
, Lab 2 Kinematics PHY250L”
b. Solve the above equation for the time variable. Your equation must have proper
formatting and should be in variable format.
t = sqr rt 2* 1.7m / 9.81 m/s^2
c. Solve for the predicted time it will take for the hex nut to reach the ground.
= .589 seconds
Data and Observations
In the table below, input your observations of the time it took for the hex nut to fall from the height you
specified in the previous section.
Table 1. Washer Free Fall Data
Trial Drop Height (m) Time (s)
1 1.7 m .53
2 1.7 m .62
3 1.7 m .57
Average 1.7 m .57
1. Clearly describe the pattern of noise generated by the equally spaced hex nut pattern.
Specifically, was the pattern consistent, or did it change as the rope descended?
The sound of the noise was similarily spaced out every time, the noises got louder during each
turn.
2. Clearly describe the pattern of noise generated by the unequally spaced hex nut pattern.
Specifically, was the pattern consistent, or did it change as the rope descended?
The unequally spaced hex nut noises were very fast at first, after that they were spaced out
again very similar. The last noise was the loudest.
Student Name: Annie Burns
Access Code (located on the underside of the lid of your lab kit): AC-8PYXXK
Lab Report Format Expectations
Utilize college level grammar and formatting when answering text based questions.
Report all equations in a proper mathematical format, with the correct signs and symbols.
Submissions with incomplete or improperly formatted responses may be rejected.
Pre-Lab Questions
1. What is the acceleration of a ball that is vertically tossed up when it reaches its maximum
height?
9.8m/s^2.
2. Describe what the slopes of a position vs. time graph mean in relation to velocity.
The slope of the position vs a time graph gives the velocity, and the magnitude of the slope can
tell us how fast an object is moving. Whether it is positive or negative indictes which direction it
is moving in.
3. State the 1D and 2D kinematics equations you will use in this lab in variable form. (Do not state
equations that you will not use.)
Displacement equation- d = V0T +1/2at^2
4. Final Velocity equation- Vf = V0 +at
5. Final Velocity Squared equation = Vf^2 = V0^2 + 2ad
6. df= 1/2gt^2
7. Why is it important to consider the X and Y components of the kinematics equations
independently?
Using the X and Y components independently can avoid errors and allows for a more accurate
anaylysis of motion.
,Lab 2 Kinematics PHY250L”
EXPERIMENT 1: FREE FALL CALCULATIONS
Introduction Questions
1. This experiment contains two separate tasks: one where you will drop two strings with hex nuts
tied at varying intervals, and another where you will drop a single hex nut from a specific height.
In your own words, explain the steps you will take in preparing the ropes for the first task. Your
lab will not be graded without a detailed explanation that reflects your understanding of the
preparation for this experiment.
I will get a string and measure it to 2.5 m. I will take the hex nuts and tie them to the string each
40 cm apart until reaching the end of my string. I will hold the string over the pan to make sure
the hex nuts are not moving. I will then begin the experiment.
2. What measurements will you be required to take during this experiment?
I will measure the drop time and height of the drop for 3 consecutive times to find the average
3. If you drop a ball, and then one second later drop a ball identical in mass, size and shape, what
happens to the distance between them as they fall? The answer to this question is integral to
understanding the rest of the lab, so ensure you have a full understanding of it before
answering.
When you drop the second ball, the distance between them increases as they fall. This happens
because the first ball has been falling longer, so in turn it has built up a greater speed due to
gravity. Both balls accelerate downward at the same rate but the first ball will always be moving
faster.
4. How do you think Question 3, above, pertains to this experiment?
It is important to understand how constant acceleration will affect objects falling from a certain
height. Since we are dropping hex nuts at different distances from the ground, it is important to
know how gravity might affect our experiment.
5. From what height will you drop the single hex nut?
I will drop the hex nut from 1.7m.
6. Using the kinematics equations, calculate the length of time it will take the single hex nut to
land, given the height that you provided. You must show the specified portions of the
calculation:
a. State the kinematics equation you will use in variable form. It must be legible and have
the proper formatting.
df=1/2gt^2
, Lab 2 Kinematics PHY250L”
b. Solve the above equation for the time variable. Your equation must have proper
formatting and should be in variable format.
t = sqr rt 2* 1.7m / 9.81 m/s^2
c. Solve for the predicted time it will take for the hex nut to reach the ground.
= .589 seconds
Data and Observations
In the table below, input your observations of the time it took for the hex nut to fall from the height you
specified in the previous section.
Table 1. Washer Free Fall Data
Trial Drop Height (m) Time (s)
1 1.7 m .53
2 1.7 m .62
3 1.7 m .57
Average 1.7 m .57
1. Clearly describe the pattern of noise generated by the equally spaced hex nut pattern.
Specifically, was the pattern consistent, or did it change as the rope descended?
The sound of the noise was similarily spaced out every time, the noises got louder during each
turn.
2. Clearly describe the pattern of noise generated by the unequally spaced hex nut pattern.
Specifically, was the pattern consistent, or did it change as the rope descended?
The unequally spaced hex nut noises were very fast at first, after that they were spaced out
again very similar. The last noise was the loudest.
