Homework Answers
10] If an object changes direction, it must instantaneously come to rest before the direction is reversed (provided the motion is purely one-dimensional). So, a velocity vs time graph will pass through the horizontal axis and the time when the graph changes the quadrant is the time when the object changes its direction.
11] Speed is zero when the direction changes.
12] Acceleration is a vector quantity and so it may not always be positive if the cart is speeding up. For example, a cart traveling in the negative horizontal direction will have a negative acceleration but it will be speeding up (increasing speed with time).
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Name: Question 10. How can you tell from a yelocity ys time graph that the moving...
No need for evidence Question 7. How can you tell from an acceleration graph whether the...
No need for evidence
Question 7. How can you tell from an acceleration graph whether the evidence do you have to support your answer? velocity constant or changing? What Que How can you tell from a position graph whether the acceleration was positive, negative or zero? What evidence do you have to support your answer? stion 8. Question 9. How can you tell from a velocity graph whether the acceleration was positive, negative or zero? What evidence do you have...
No need for evidence Question 4. How can you tell from a position graph whether the...
No need for evidence
Question 4. How can you tell from a position graph whether the instantaneous velocity was positive, negative or zero? What evidence do you have to support your answer? How does the slope of a position graph indicate whether the velocity is constant or changing? What evidence do you have to support your answer? Question 5. Question 6. How does the slope of a velocty graph indicate whether the velocity is constant or changing What evidence do...
Impulse and Momentum Name: Date: TA's Name: Learning Objectives: 1. Understanding force ys time curves for...
Impulse and Momentum Name: Date: TA's Name: Learning Objectives: 1. Understanding force ys time curves for a collision. 2. Calculating impulse using force vs. time curves. 3. Understanding the relationship between impulse and momentum. 4. Applying conservation of momentum for inelastic collisions. Apparatus: Aluminum track, track legs, two smart carts, two cart stops, and small black rectangular cart masses. Part A: Collision of a moving cart with a fixed cart cart 1 Cart stop stationary cart cart stop Consider the...
How do you answer question 4? Draw a quantitatively correct graph of velocity vs. time for...
How do you answer question 4?
Draw a quantitatively correct graph of velocity vs. time for the following scenario (you will need add numerical labels to the axes) A maintains a constant acceleration with magnitude of 2 m/s^2. At t = 5 s the cart changes direction. What is the displacement of the cart in the first 5 seconds of its motion? How does this differ from total distance traveled (or goes it) over the same time interval?
Any one please help me graph and answer the questions. Thank you 1. Sketch the position...
Any one please help me graph and answer the questions. Thank
you
1. Sketch the position vs. time graph for each of the following situations: An object at rest An object moving in the positive direction with a constant speed . An object moving in the negative direction with a constant speed An object constantly accelerating in the positive direction, starting from rest 2. How do you find the velocity from the position!? How do you find the position from...
Choose a function to represent the acceleration vs. time graph. How can you calculate the values...
Choose a function to represent the acceleration vs. time graph. How can you calculate the values of the constants of this function from the function representing the position versus time graph? Check how well this works. You can also estimate the values of the constants from the graph. What kinematics quantities do these constants represent? Record the corresponding kinematic quantities and the values of the corresponding errors. From either the position vs. time, velocity vs. time, or acceleration vs. time...
Anyone please help me sketch question number 3 . Thank you 1. Sketch the position vs....
Anyone please help me sketch question number 3 .
Thank you
1. Sketch the position vs. time graph for each of the following situations: . An object at rest . An object moving in the positive direction with a constant speed An object moving in the negative direction with a constant speed An object constantly accelerating in the positive direction, starting from rest How do you find the velocity from the position? How do you find the position from the...
your acceleration was in the positive or negative direction. You may have to adjust the axes...
your acceleration was in the positive or negative direction. You may have to adjust the axes to see the needed features. Once you get a good graph, study it until you can answer this question: Acceleration graphs are typically "noisy," but you have to at least be able to tell What was the sign of the acceleration while you were speeding up while moving away? Use the definition of acceleration to show how you arrived at this answer Explain why...
Please help with this Kinematics question! Velocity vs. time graph. 3. Consider this velocity vs. time...
Please help with this Kinematics question! Velocity vs. time
graph.
3. Consider this velocity vs. time graph. (a)* At what times does the obect change direction? (m's o How do you know? 10 -1 t (seconds) (b) What is the object doing at t-6 s and -9 s. (Hint: It's not changing direction.) (c) In which direction is the object moving at-7s? Explain. (d) At what time is the object farthest from its initial position? How do you know? (e)"...
Can you do 4,5,7,8 please Graph Practice Problems -v vs.t PHYS&114 Name: Use the graph below...
Can you do 4,5,7,8 please
Graph Practice Problems -v vs.t PHYS&114 Name: Use the graph below to answer questions 1-11. The graph represents the velocity of a particle as a function of time. The positive direction is right and the negative direction is left. 25 20 15 10 7 8 9 o -5 -10 -15 -20 25 time (s) 1. What is the instantaneous velocity of the particle at t-3.00s? 2. What is the instantaneous velocity of the particle at...
No need for evidence
Question 7. How can you tell from an acceleration graph whether the evidence do you have to support your answer? velocity constant or changing? What Que How can you tell from a position graph whether the acceleration was positive, negative or zero? What evidence do you have to support your answer? stion 8. Question 9. How can you tell from a velocity graph whether the acceleration was positive, negative or zero? What evidence do you have...
No need for evidence
Question 4. How can you tell from a position graph whether the instantaneous velocity was positive, negative or zero? What evidence do you have to support your answer? How does the slope of a position graph indicate whether the velocity is constant or changing? What evidence do you have to support your answer? Question 5. Question 6. How does the slope of a velocty graph indicate whether the velocity is constant or changing What evidence do...
Impulse and Momentum Name: Date: TA's Name: Learning Objectives: 1. Understanding force ys time curves for a collision. 2. Calculating impulse using force vs. time curves. 3. Understanding the relationship between impulse and momentum. 4. Applying conservation of momentum for inelastic collisions. Apparatus: Aluminum track, track legs, two smart carts, two cart stops, and small black rectangular cart masses. Part A: Collision of a moving cart with a fixed cart cart 1 Cart stop stationary cart cart stop Consider the...
How do you answer question 4?
Draw a quantitatively correct graph of velocity vs. time for the following scenario (you will need add numerical labels to the axes) A maintains a constant acceleration with magnitude of 2 m/s^2. At t = 5 s the cart changes direction. What is the displacement of the cart in the first 5 seconds of its motion? How does this differ from total distance traveled (or goes it) over the same time interval?
Any one please help me graph and answer the questions. Thank
you
1. Sketch the position vs. time graph for each of the following situations: An object at rest An object moving in the positive direction with a constant speed . An object moving in the negative direction with a constant speed An object constantly accelerating in the positive direction, starting from rest 2. How do you find the velocity from the position!? How do you find the position from...
Anyone please help me sketch question number 3 .
Thank you
1. Sketch the position vs. time graph for each of the following situations: . An object at rest . An object moving in the positive direction with a constant speed An object moving in the negative direction with a constant speed An object constantly accelerating in the positive direction, starting from rest How do you find the velocity from the position? How do you find the position from the...
your acceleration was in the positive or negative direction. You may have to adjust the axes to see the needed features. Once you get a good graph, study it until you can answer this question: Acceleration graphs are typically "noisy," but you have to at least be able to tell What was the sign of the acceleration while you were speeding up while moving away? Use the definition of acceleration to show how you arrived at this answer Explain why...
Please help with this Kinematics question! Velocity vs. time
graph.
3. Consider this velocity vs. time graph. (a)* At what times does the obect change direction? (m's o How do you know? 10 -1 t (seconds) (b) What is the object doing at t-6 s and -9 s. (Hint: It's not changing direction.) (c) In which direction is the object moving at-7s? Explain. (d) At what time is the object farthest from its initial position? How do you know? (e)"...
Can you do 4,5,7,8 please
Graph Practice Problems -v vs.t PHYS&114 Name: Use the graph below to answer questions 1-11. The graph represents the velocity of a particle as a function of time. The positive direction is right and the negative direction is left. 25 20 15 10 7 8 9 o -5 -10 -15 -20 25 time (s) 1. What is the instantaneous velocity of the particle at t-3.00s? 2. What is the instantaneous velocity of the particle at...
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