Question

Activity #1:
PROJECT ALREADY COMPLETED. TIMES ARE LISTED BELOW.
To begin with, you will be asked to throw a ball in the air, and record it on a camera, cell phone, webcam, etc. Whatever you have on hand that can create a digital video of the throw. Please follow the procedure outlined below to complete your video.

Setup your camera such that it can capture the ENTIRE throw of the ball, from release to the peak, to catching it again.

Throw the ball in the air so that it reaches a decent maximum height. Roughly more than a meter but less than 10 meters. Again, the camera should be able to see the entire path of the ball.

Throw the ball straight up in the air, not sideways at all. You should catch the ball at the same height at which you threw it.


From your video, step through it frame by frame and record the time from the moment the ball leaves your hand. Then make note of the time right before the ball comes back to your hand. Find the time of flight of the ball and write out all your work below.

Time ball left hand Time ball returned hand

1st: 00:00:53 00:01:48
2nd 00:00:56 00:01:30
3rd 00:00:50 00:01:20
4th 00:00:60 00:01:46

Making some assumptions about the initial and final velocities, derive an equation for finding the velocity from the time of flight you measured in #2. Write out all your work. (HINT: v0 = -vf)

From the information you have, derive the maximum height of the ball you threw. Write out all the work in the space below.


Using your video and estimating a scale, comment on how accurate your calculation of maximum height is. Write out all your work and assumptions, i.e. using your height, you estimate the height of the ball to be twice your height).


In the space below, sketch a graph of the position versus time, velocity versus time, and acceleration versus time of the ball’s flight. You can do this with a spreadsheet program, or by hand, your preference. Below each sketch, explain your choice of graph shape.


Write a lab summary explaining what you did and the physics principles involved. Additionally, explain any systematic sources of error in your data. Include comments on how you might correct errors given more time and better lab materials.


Describe how you think constant acceleration kinematics may apply in your daily life. It could be related to work, home, or other activities.

Answer 1

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☞︎︎︎In a position-time graph , velocity is given by the slope of position curve with time axis . from the given graph , it is clear that car 2 has the maximum slope with time axis at time t , then car 1 and as the slope of car 3 is zero with time axis therefore its velocity is zero i.e. it is stationary . the rank is 2,1,3 .

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☞︎︎︎Science labs usually ask you to compare your results against theoretical or known values. This helps you evaluate your results and compare them against other people’s values. The difference between your results and the expected or theoretical results is called error. The amount of error that is acceptable depends on the experiment, but a margin of error of 10% is generally considered acceptable. If there is a large margin of error, you’ll be asked to go over your procedure and identify any mistakes you may have made or places where error might have been introduced. So, you need to know the different types and sources of error and how to calculate them.

Science labs usually ask you to compare your results against theoretical or known values. This helps you evaluate your results and compare them against other people’s values. The difference between your results and the expected or theoretical results is called error. The amount of error that is acceptable depends on the experiment, but a margin of error of 10% is generally considered acceptable. If there is a large margin of error, you’ll be asked to go over your procedure and identify any mistakes you may have made or places where error might have been introduced. So, you need to know the different types and sources of error and how to calculate them.How to Calculate Absolute Error

Science labs usually ask you to compare your results against theoretical or known values. This helps you evaluate your results and compare them against other people’s values. The difference between your results and the expected or theoretical results is called error. The amount of error that is acceptable depends on the experiment, but a margin of error of 10% is generally considered acceptable. If there is a large margin of error, you’ll be asked to go over your procedure and identify any mistakes you may have made or places where error might have been introduced. So, you need to know the different types and sources of error and how to calculate them.How to Calculate Absolute ErrorOne method of measuring error is by calculating absolute error, which is also called absolute uncertainty. This measure of accuracy is reported using the units of measurement. Absolute error is simply the difference between the measured value and either the true value or the average value of the data.

Science labs usually ask you to compare your results against theoretical or known values. This helps you evaluate your results and compare them against other people’s values. The difference between your results and the expected or theoretical results is called error. The amount of error that is acceptable depends on the experiment, but a margin of error of 10% is generally considered acceptable. If there is a large margin of error, you’ll be asked to go over your procedure and identify any mistakes you may have made or places where error might have been introduced. So, you need to know the different types and sources of error and how to calculate them.How to Calculate Absolute ErrorOne method of measuring error is by calculating absolute error, which is also called absolute uncertainty. This measure of accuracy is reported using the units of measurement. Absolute error is simply the difference between the measured value and either the true value or the average value of the data.absolute error = measured value – true value.

☞︎︎︎The goal of this first unit of The PhysicsClassroom has been to investigate the variety of means by which the motion of objects can be described. The variety of representations that we have investigated includes verbal representations, pictorial representations, numerical representations, and graphical representations (position-time graphs and velocity-time graphs). In Lesson 6, we will investigate the use of equations to describe and represent the motion of objects. These equations are known as kinematic equations.

Answer 2

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• In a position-time graph , velocity is given by the slope of position curve with time axis . from the given graph , it is clear that car 2 has the maximum slope with time axis at time t , then car 1 and as the slope of car 3 is zero with time axis therefore its velocity is zero i.e. it is stationary . the rank is 2,1,3 .
• Science labs usually ask you to compare your results against theoretical or known values. This helps you evaluate your results and compare them against other people’s values. The difference between your results and the expected or theoretical results is called error. The amount of error that is acceptable depends on the experiment, but a margin of error of 10% is generally considered acceptable. If there is a large margin of error, you’ll be asked to go over your procedure and identify any mistakes you may have made or places where error might have been introduced. So, you need to know the different types and sources of error and how to calculate them.

• Science labs usually ask you to compare your results against theoretical or known values. This helps you evaluate your results and compare them against other people’s values. The difference between your results and the expected or theoretical results is called error. The amount of error that is acceptable depends on the experiment, but a margin of error of 10% is generally considered acceptable. If there is a large margin of error, you’ll be asked to go over your procedure and identify any mistakes you may have made or places where error might have been introduced. So, you need to know the different types and sources of error and how to calculate them.How to Calculate Absolute Error

• Science labs usually ask you to compare your results against theoretical or known values. This helps you evaluate your results and compare them against other people’s values. The difference between your results and the expected or theoretical results is called error. The amount of error that is acceptable depends on the experiment, but a margin of error of 10% is generally considered acceptable. If there is a large margin of error, you’ll be asked to go over your procedure and identify any mistakes you may have made or places where error might have been introduced. So, you need to know the different types and sources of error and how to calculate them.How to Calculate Absolute ErrorOne method of measuring error is by calculating absolute error, which is also called absolute uncertainty. This measure of accuracy is reported using the units of measurement. Absolute error is simply the difference between the measured value and either the true value or the average value of the data.

• Science labs usually ask you to compare your results against theoretical or known values. This helps you evaluate your results and compare them against other people’s values. The difference between your results and the expected or theoretical results is called error. The amount of error that is acceptable depends on the experiment, but a margin of error of 10% is generally considered acceptable. If there is a large margin of error, you’ll be asked to go over your procedure and identify any mistakes you may have made or places where error might have been introduced. So, you need to know the different types and sources of error and how to calculate them.How to Calculate Absolute ErrorOne method of measuring error is by calculating absolute error, which is also called absolute uncertainty. This measure of accuracy is reported using the units of measurement. Absolute error is simply the difference between the measured value and either the true value or the average value of the data.absolute error = measured value – true value.
• The goal of this first unit of The PhysicsClassroom has been to investigate the variety of means by which the motion of objects can be described. The variety of representations that we have investigated includes verbal representations, pictorial representations, numerical representations, and graphical representations (position-time graphs and velocity-time graphs). In Lesson 6, we will investigate the use of equations to describe and represent the motion of objects. These equations are known as kinematic equations.

Thankyou!!