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UNIT 4 QUIZ REVIEW - DUE MONDAY 12/20
Quiz is Wednesday, 12/22
Make sure to use all available resources in your Unit 4 Measuring Motion packet and and re-read/review Chapter 1 section 1. For the quiz you must demonstrate your ability to meet the following objectives:
- Students will be able to describe the motion of an object by the position of the object in relation to a reference point.
- Students will be able to identify the two factors that are needed in order to determine speed.
- Students will be able to calculate speed.
- Students will be able to construct and utilize a graph to measure and analyze changes in motion.
- Students will be able to explain the difference between speed and velocity.
- Students will be able to explain the relationship between velocity and acceleration.
1. The motion of an object can be studied by observing the changes in an object’s ______in relation to a reference point.
A. position.
B. size.
C. mass.
D. density.
2. The best way to measure the motion of a car on a highway is to compare the car's position with the position of
A. any other moving object.
B. a slower car.
C. a faster car.
D. a stationary object.
3. Suppose you can run 4 m/s. Four meters per second is your
A. position.
B. time.
C. speed.
D. distance.
4. Suppose you ride to school on a bus that makes several stops and takes one hour to go a distance of 30 km. The ______of the bus is 30 km/h.
A. total speed
B. average speed
C. average time
D. average distance
5. The average speed of a car that travels a distance of 240 km in three hours is
Average speed = total distance / total time
SHOW YOUR WORK! Average speed = 240km/3 hours
A. 720 km/h. = 80 km/hour
B. 120 km/h.
C. 80 km/h.
D. 40 km/h.
6. A commuter train rounds a curve at a constant speed of 37 km/h. The train’s velocity changes as the train travels around the curve because the train
A. slows down.
B. speeds up.
C. goes at a constant speed.
D. changes direction.
8. A car traveling at a velocity of 18 m/s north begins to accelerate. After 3 seconds, the car’s velocity is 27 m/s north. The car’s acceleration is
Acceleration = final speed – initial speed / time
SHOW YOUR WORK! Acceleration = 27m/sec-18m/sec
3 sec
A. 1 m/s/s north. = 3 m/sec/sec
B. 3 m/s/s north.
C. 6 m/s/s north.
D. 9 m/s/s north.
9. Explain what your answer to number 8 means. It means that for every second that passes, the speed is increasing by 3 m/sec
10. The ______of a communications satellite in orbit around Earth constantly changes because it changes direction.
A. distance
B. velocity
C. weight
D. speed
11. Describe the speed of object A as compared to object B based upon the information on the distance vs. time graph below Object A is traveling faster, steeper slope means that a greater distance is being traveled in a shorter amount of time
distance (m)
time (sec)
12. Describe the motion of the object between points A and B on the distance vs. time graph below.
distance (m)
stopped – there is no increase in distance
Time (sec)
13. What does the slope of a line on a distance vs. time graph tell you? The speed of the object
Acceleration Graph
Speed(m/sec)
Time (sec)
14. Use the acceleration graph above to describe the acceleration of the object between points A and B. ( INCREASE, DECREASE, OR REMAIN CONSTANT)
15. Use the acceleration graph above to describe the acceleration of the object between points B and C. ( INCREASE, DECREASE, OR REMAIN CONSTANT)
16. Use the acceleration graph above to describe the acceleration of the object between points C and D. ( INCREASE, DECREASE, OR REMAIN CONSTANT)