The exam will contain true/false questions, multiple choice questions, and one essay question. A set of possible topics for the essay question will be distributed one week before the exam.
The following statement will be on the exam: In case you need them, distance = rate x time and force = mass x acceleration.
Part One. True/False Questions. Three points each. Mark true ("A") if the statement is more true than false and mark false ("B") if the statement is more false than true. These questions are worth three points each.
The next three questions deal with the following situation: An ice skater who is skating in a straight line along the canals in northern Holland skates a distance of 25 km in 50 minutes. Her speed does not change during this time interval.
1. Her average speed is 2 kilometers per minute.
2. Her acceleration is zero.
3. Her kinetic energy remains the same .
4. The speed-time graph which is shown in Picture 1 describes the same motion as the distance-time graph which is shown in Picture 2. (Sorry; I don't provide the pictures, but these pictures will be very similar to the ones shown in class.)
5. When a car moves at a constant speed, there are no unbalanced forces acting on it.
6. In order for any object to move at a constant speed, there must be a force continuously acting on it.
Multiple Choice Questions. 5 points each
The following questions deal with Picture 3, which is a distance-time graph describing the motion of a drive in a car.
7. What was the maximum speed of the car during the drive?
A. 0 km/h B. 16km/h. C. 25 km/h. D. 40 km/h.
8. What time was it when Kelly slammed on the brakes?
A. 11:13 B. 11:27 C. 11;35 D. about 10-20 seconds after 11:35.
9. At which of the following times was the acceleration of Kelly's car zero?
A. 11:13 B. 11:27 C. 11;35 D. about 10-20 seconds after 11:35.
10. A vehicle whose speed and direction is unchanging has
A. zero velocity.
B. zero acceleration.
C, zero mass.
D. no forces acting on it.
E. all of the above.
11. Suppose that Jane Jones is studying the natural world and face a situation where the evidence permits two different interpretations. Jane Jones is a scientist. What can she say to her scientific colleagues?
A. Nothing about this situation because science deals with things that must be true.
B. She would pick one interpretation, only describe it, and treat her conclusions as "only a theory."
C. She would just describe the evidence and not say anything about possible explanations.
D. She would describe both interpretations and show how each explained the evidence.
12. Suppose that someone in a group misses a group meeting. What are the consequences?
A. They are strictly spelled out in the course syllabus posted on the web by the course instructor.
B. They are determined by the group's ground rules.
C. They are determined by the group on a case by case basis.
D. There are no consequences as long as the absentee has a note from a doctor, parent, or other responsible person.