Open the data from Trials II and III. Answer the following questions in Notes on your handheld computer.
What does the steepness of the position versus time graph tell you about the velocity of the cart? How can you tell from the graph whether the cart is going forward or backward?
What is the shape of the distance versus time graphs of a cart as it moves at:
constant velocity?
decreasing velocity?
increasing velocity?
How did the acrobat move during Trial II and Trial III? What happened to either make it move or keep it still during each motion of the cart?
How would you calculate velocity from the position versus time graph? Do you think that if you knew the position of the cart at every moment, you could know its velocity as well?
