3.) You are making a circular turn in your car on a horizontal road when you hit a big patch of ice, causing the force of friction between the tires and the road to become zero. While the car is on the ice, it a.) moves along a straight-line path away from the center of the circle. b.) moves along a path that is neither straight nor circular. c.) moves along a straight-line path toward the center of the circle. d.) moves along a straight-line path in its original direction. e.) continues to follow a circular path, but with a radius larger than the original radius.
3.) You are making a circular turn in your car on a horizontal road when you hit a big patch of ice, causing the
| a.) moves along a straight-line path away from the center of the circle. |
| b.) moves along a path that is neither straight nor circular. |
| c.) moves along a straight-line path toward the center of the circle. |
| d.) moves along a straight-line path in its original direction. |
| e.) continues to follow a circular path, but with a radius larger than the original radius. |
4.) A stone is held at a height h above the ground. A second stone with four times the mass of the first one is held at the same height. The gravitational potential energy of the second stone compared to that of the first stone is
| a.) one-fourth as much. |
| b.) four times as much. |
| c.) twice as much. |
| d.) one-half as much. |
| e.) the same. |
5.) Person X pushes twice as hard against a stationary brick wall as person Y. Which one of the following statements is correct?
a.) Both do zero work.
b.) Both do positive work, but person X does one-half the work of person Y.
c.) Both do positive work, but person X does twice the work of person Y.
d.) Both do the same amount of positive work.
e.) Both do positive work, but person X does four times the work of person Y.
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