Lab 5

Q1. Part II Guide Question:

Compare/describe the shape of the x vs. t graph with the y vs. t . Explain the shape of the

graphs by relating it to the vertical and horizontal motion of the projectile. Are they

consistent with acceleration in the y- direction only and constant velocity in the x- direction?

Explain.

Q2. Part III Guide Questions: Include all answers

in the Final Lab Report. (a) What does the shape of the graph imply about the horizontal

motion - in terms of velocity and acceleration? (b) What physical quantity does the "m"

represent? (c) Write down the corresponding horizontal projectile motion equation (with the

slope value and units).

Q3. Part III Guide Questions:(a) Describe the behavior of the slope. What does the shape of the graph tell you about the vertical motion of the projectile? (b) In the y vs t graph, there's a point where the slope is zero. Where is this? Mark this point on the graph. What does the zero slope tell you about the vertical position, y and vertical velocity, vy? (c) What physical quantities do the coefficients A, B, and C represent? Explain how you can get the experimental "g" from the value of the parameter A. Show your work. (d) Write down the corresponding vertical projectile motion equation (with the A, B, and C values and units).

Q4. Guide Questions: a) What does the shape of the graph tell you about the vertical velocity of the projectile? b) What is the numerical value and unit of the slope and what does it represent? c) What is the numerical value and unit of the y intercept and what does it represent? d) Write down the corresponding vertical projectile motion equation. d)

Compare the slope value in this graph with the parameter A in y vs t graph. Do you notice

any relationship? d) Compare the experimental g you obtained from the vy vs. t graph and the

UST value of g = 9.793 m/s2. Which one is more appropriate to use- percent error or percent

difference? Explain your choice. Show calculation.]

Q5. Guide Question: a) Compare the 2 graphs in terms of their

general shape. Do the shapes represent more or less the expected independence of the

horizontal and vertical motion of a projectile? Explain. b) For vx vs. t graph, what functional

PHYSICS 1 LAB-7- relationship do you expect between vx and t? Notice that the points on the vx vs. t graph seem to be jagged. What do you think is the reason for this? Explain. c) What does the mean value

represent? d) If there is an indication of a small amount of horizontal acceleration for vx vs. t graph, how might such a value occur? Explain.

Q6. Post lab Questions: a) What were the potential sources of error in this experiment? How might such error sources be reduced and the experimental results improved? b) How can this experiment be improved? Write down 3 suggestions.