22 Oct slowing down
straight line with a constant speed—not speeding up or slowing down—have …Your question has been answeredLet us know if you got a helpful answer. Rate this answer
Question: Objects that move in a straight line with a constant speed—not speeding up or slowing down—have z…
(1 bookmark)
Objects that move in a straight line with a constant speed—not speeding up or slowing down—have zero acceleration. We call this kind of motion: Uniform Motion. We can identify uniform motion when the object travels equal distance intervals in equal times.
We can identify non-uniform motion, or accelerated motion, when the object travels equal distance intervals in unequal times. Finally, we have two types of non-uniform motion: motion with constant acceleration and motion with a non-constant (or changing) acceleration.
Activity 1
Today you will analyze the motion of a cart traveling along an inclined track. You will begin by doing a thought experiment, predicting the motion of your object. Discuss your ideas among your group…it is okay to disagree!
Sketch an acceleration-versus-time graph for an object, starting with some initial speed, traveling on a flat track. Remember, this sketch is a prediction; what do you think it would look like? Then sketch a velocity-versus-time graph for the same case.
1. Explain the shape of your acceleration graph.
2. Explain the shape of your velocity graph
Sketch an acceleration-versus-time graph and a velocity-versus-time graph for an object, starting with some initial speed, traveling down an inclined track.
3. Explain the shape of your acceleration graph.
4. Explain the shape of your velocity graph
Activity 2
Now, using a track, cart meter stick and stopwatches, you will make some measurements to determine if a cart traveling down a ramp follows uniform or non-uniform motion.
First, mark a start point and end point on your track that is at least 1.5m long.
5. How many time/distance data points, between start and end, will be necessary to determine whether the cart is traveling with uniform or non-uniform motion? Explain your choice. Note: you may want to look at Questions 8 & 9 to help inform your choice.
6. Now, outline your measurement plan (procedure) to make this determination of uniform or non-uniform motion. You procedure should include clear instructions, such that anyone could reproduce you experiment exactly.
7. Create a data table and record your data in the space below.
8. Now you will need to use your data to calculate velocities and accelerations. Recall that we have discussed average velocity as vavg = Δx/Δt as well as vavg = (vi + vf)/2. We also discussed average acceleration as aavg = Δv/Δt. Using these equations, calculate the instantaneous velocity of your cart at each distance/time data point and the average acceleration between each pair of distance/time data points. When you have completed your calculations, organize your results into a table with four columns: time, position, velocity, and average acceleration.
9. Now you will graph your results. Plotting [1] a graph of position (y-axis) vs. time (x-axis); [2] a graph of velocity (y-axis) vs. time (x-axis); and [3] a graph of acceleration (y-axis) vs. time (x-axis). Be sure to fully label your graphs. This may be done on a computer or on graph paper. Attach your graphs to the back of this packet.
10. Based on your data and results, answer the lab questions: does a cart traveling down a ramp follow uniform or non-uniform motion? If it follows non-uniform motion, is the acceleration constant or non-constant? Support your answer with evidence from your experiment.
11. Are you confident in your answer to question 10? Explain why or why not.
12. Now, compare your answer (and resulting graphs) to the prediction sketches you made in Activity 1. Do your predictions match your results? If not, which do you believe (prediction or results) and why?
13. Finally, take some time to evaluate your procedure. Do you think it was an effective procedure? Were there any problems with it? How would you change/improve upon the procedure if you were to repeat this experiment?
Our website has a team of professional writers who can help you write any of your homework. They will write your papers from scratch. We also have a team of editors just to make sure all papers are of HIGH QUALITY & PLAGIARISM FREE. To make an Order you only need to click Ask A Question and we will direct you to our Order Page at WriteDemy. Then fill Our Order Form with all your assignment instructions. Select your deadline and pay for your paper. You will get it few hours before your set deadline.
Fill in all the assignment paper details that are required in the order form with the standard information being the page count, deadline, academic level and type of paper. It is advisable to have this information at hand so that you can quickly fill in the necessary information needed in the form for the essay writer to be immediately assigned to your writing project. Make payment for the custom essay order to enable us to assign a suitable writer to your order. Payments are made through Paypal on a secured billing page. Finally, sit back and relax.
About Writedemy
We are a professional paper writing website. If you have searched a question and bumped into our website just know you are in the right place to get help in your coursework. We offer HIGH QUALITY & PLAGIARISM FREE Papers.
How It Works
To make an Order you only need to click on “Order Now” and we will direct you to our Order Page. Fill Our Order Form with all your assignment instructions. Select your deadline and pay for your paper. You will get it few hours before your set deadline.
Are there Discounts?
All new clients are eligible for 20% off in their first Order. Our payment method is safe and secure.