Let's start out with p=0,v=10,a=0.

Hit the run button?

What is the position of the cow at t=3 seconds?

What is the velocity of the cow at t=3 seconds?

Now set p=5,v=5, and a = 1.

What is the position of the cow at t=3 seconds?

What is the velocity of the cow at t=3 seconds?

Finally, for a some value of p and v. Determine what value of acceleration (a) will cause the cow to turn around right when it gets to the right hand side of the screen (p=60). What is the total travel time of the cow?

Try to reproduce these results, using your numbers by noting that:

The velocity as a function of time is:

v(t) = v_o + at

The total displacement, x (which is p in the above) is given by

x = v_ot + 1/2at²