2.     Count the total wheel spokes – front and back ________
(Remember that the Coach has 4 wheels.)

3.     As they rotate, which wheels (front or rear) make more revolutions? _________   why?_____________________

4.    If 2 people can sit at the drivers/shotgun position and another 6 people can sit on top (3 behind the driver and 3
on a rear “jump seat”), and another 9 inside the coach, how many total people can ride on and in the coach? ___

5.    Which will provide the smoothest ride: a large wheel or a small wheel? __________ why?_________________________________

6.    When the driver pushes the foot brake (which moves the brake against the rear wheels), what is the
resulting force called that makes the wheels turn slower?______________  (demonstrate this force by  pressing
your hands together and sliding them against each other)

7.    What is the purpose of  the side curtains?  Check those that apply:

·        Reduces dust inside the coach _______

·        Prevents hot sun from shining in_______

·        Protects passengers against rain and snow_______

·        All of the above_________

8.     What shape of the Coach undercarriage allows the Coach to rock – front and back (like a “cradle” - according to
 Mark Twain)?   ________________________________

9.     There is a black, gooey material (grease) that is put around the wheel hub and axle. What is the purpose of this material?
 _______________________

10.  As you visualize the coach from the back or from the front, what physics principle allows the coach to ride
over a  slanted surface without tipping over?__________________________________

11.   What is the purpose of having straps with buckles holding the rear boot leather cover?
 _________________________________________