Upload
emery-boyd
View
217
Download
0
Tags:
Embed Size (px)
Citation preview
Ch. 4 Review Game
• Fun in B206!• Pick up Study Guide!
Speed that does not change is called:
• A. average speed.
• B. constant speed.
• C. instant speed.
• D. minimum speed.
2
Displacement vectors of 5 km south, 3 km north, 1 km south, and 2 km north combine to a total displacement of
• A. 1 S
• B. 2 S
• C. 3 S
• D. 4 S
3
Variables like velocity and acceleration that have both size and direction are called:
• a. vectors.
• b. dependent.
• c. axes.
• d. independent.
4
Speed is the ratio of the distance an object moves to
• A. the time needed to travel.
• B. the direction the object moves.
• C. the displacement of the object.
• D. the motion of the object.
5
What is the slope of a line on a distance-time graph?
• A. distance.
• B. time.
• C. speed.
• D. displacement.
6
A horizontal line on a distance-time graph means the object is
• A. moving at a constant speed.
• B. moving faster.
• C. slowing down.
• D. at rest.
7
The gain in speed each second for a freely falling object is about
• A. about 0 m/s.
• B. about 5 m/s.
• C. about 10 m/s.
• D. depends on the initial speed.
8
The rate at which velocity changes is called
• A. acceleration.
• B. motion.
• C. vectors.
• D. speed.
9
A car approaching a school changes speed from 10 m/s to 5 m/s in 5 s. How can the car’s acceleration be described?
• A. The acceleration is positive
• B. It is not accelerating.
• C. It will come to rest in 5 seconds.
• D. The acceleration is negative.
10
An object that is accelerating may be
• A. slowing down.
• B. gaining speed.
• C. changing direction.
• D. all of the above
11
A freely falling objects speed is
• a. constant.
• b. increasing.
• c. decreasing.
• d. directional.
12
After starting from rest, a freely falling object accelerates at a
• a. constant rate.
• b. increasing rate.
• c. decreasing rate.
• d. changing rate.
13
Which of the following is a projectile?
• A. A book sliding across a desk.
• B. A golf ball rolling across a green.
• C. A soccer ball kicked into the air.
• D. A dog in a tree.
14
What is happening at point A in this speed vs. time graph?
• a. Positive acceleration • b. Zero acceleration • c. Negative acceleration • d. Constant speed• .
15
AB
C
What is happening at point B in this speed vs. time graph?
• a. Positive acceleration • b. Zero acceleration • c. Negative acceleration • d. Constant speed.
16
A
B
C
What is happening at point C in this speed vs. time graph?
• a. Positive acceleration • b. Zero acceleration • c. Negative acceleration • d. Constant speed
17
A
B
C
What is the slope of this position vs. time graph?
• a. 5 m/s
• b. 50 m/s
• c. 500 m/s
• d. 50 m
18
What is the acceleration of a lawn mower that starts at a speed of 4 m/s and speeds up to 10 m/s in 3 minutes?
• A. 3 m/min
• B. 2 m/min
• C. -2 m/min
• D. 6 m/min
19
What distance can a car go in 60 seconds if it’s speed is 3 meters per second?
• A. 12 meters
• B. 0.05 meters
• C. 120 meters
• D. 20 meters
20
How long does it take a person to get to school (5 miles away) if they travel at 35 mph?
• A. 0.5 hours
• B. 7 hours
• C. 175 hours
• D. 0.14 hours
21
What is the initial velocity of a scooter if it has a final velocity of 6 m/hr after 2 hours and they accelerate at 1.5 m/hr/s
• A. 1 m/hr• B. 2 m/hr• C. 3 m/hr• D. 4 m/hr
22