This lab is designed to introduce you to motion in one dimension as a set of measurements to do. The variables involved in this kind of motion are position (P), velocity (v), and acceleration (a); there is no friction present (which is why the cow is on roller skates) The relation between these variables as a function of time (t) is:

• v(t) = v_o + at
• p(t) = p_o + v_ot +(1/2)at²

Where the subscript o refers to initial values

1. Set p=0,v=10,a=0 and hit run
2. The position vs time (X-axis) and velocity vs time graphs are being populated as the cow is moving.
3. Read off these graphs with the cursor to determine the position of the cow at 3 and 5 seconds and verify these values using the formula
4. Record all your results and answers using the Lab Notebook link
Additonal Questions to Answer

Set p=5,v=6, a=2

1. Determine the position and velocity of the cow at t=4 seconds byusing mouseovers on the respective graphs (and note the presence of small random errors associated with the positioning of your mouse); using the v(t) and p(t) equations, verify that the graphs are correct.
2. Set p = 0 v =5 and a =-1; From graphs determine at what time the velocity of the cow is zero and verify that time via v(t) equation; now determine the maximum position of the cow and again verify that the graph is behaving correctly
3. Now set p = 0 and determine some combination for v and a which will cause the cow to turn around when it gets to the right hand side of the screen (p=60)
4. For theses values show that the total travel time of the cow makes sense.

Lab Notebook Link

In the launcher that you just activated click once on the "The 1D Cow" worksheet to open it. That will be your worksheet that you use to record the data. When done, submit your worksheet by clicking on the words "submit your work" (the first item under reporting tasks).

Second Lab: Cows in One Dimension