chapter assessment questions if an object in the diagram is replaced by a series of single points,...
TRANSCRIPT
Chapter Assessment Questions
If an object in the diagram is replaced by a series of single points, which type of diagram are you referring?
Question 1
Chapter
2
A. Motion diagram
B. Particle model
C. Coordinate system
D. Position-time graph
Chapter Assessment Questions
Answer: B
Answer 1
Chapter
2
Reason: A particle model is a simplified version of a motion diagram in which the object in motion is replaced by a series of single points.
Refer the adjoining figure and calculate the distance between the two signals?
• Insert graph
Question 2
Chapter
2 Chapter Assessment Questions
A. 3 m
B. 8 m
C. 5 m
D. 5 cm
Chapter Assessment Questions
Answer: C
Answer 2
Chapter
2
Reason: Distance d = df – di
Here, df = 8 m and di = 3 m
Therefore, d = 8 m 3 m = 5 m
From the adjacent position-time graph determine the distance covered by the competitor between 5 s and 10 s?
Question 3
Chapter
2 Chapter Assessment Questions
Chapter Assessment Questions
Answer: The distance covered by the competitor between 5 s and 10 s is d = 20 m – 10 m = 10 m.
Answer 3
Chapter
2
Chapter Assessment Questions
A car starting from rest moves with an average speed of 6 m/s. Use Equation of Motion for average velocity to calculate the distance the car traveled in 1 minute.
Question 4
Chapter
2
A. 6 m
B. 10 m
C. 60 m
D. 360 m
Chapter Assessment Questions
Answer: D
Answer 4
Chapter
2
Reason: The Equation of Motion for average velocity is d = vt + di
where d is the object’s position at time t of the object moving with average velocity v, and di is the initial position of the object. In this case di = 0, v = 6 m/s and t = 1 min = 60 s. Therefore d = (6 m/s)(60 s) + 0 m = 360 m.
The position-time graph at right shows three ships moving in a river. Determine which ship has greater average velocity?
Question 5
Chapter
2 Chapter Assessment Questions
A. Ship A
B. Ship B
C. Ship C
D. Both ship B and C
Chapter Assessment Questions
Answer: A
Answer 5
Chapter
2
Reason: The slope of A is steeper than the slopes of B and C. A steeper slope indicates a greater change in displacement during each time interval, i.e. greater average velocity.
Standardized Test Practice
1. Which of the following statements about the particle model motion diagram for an airplane taking off from an airport is true?
Multiple Choice
Chapter
2
A. The dots would form an evenly spaced pattern.
B. The dots would be far apart at the beginning, but get closer together as the planes accelerates.
C. The dots would be close together to start with, and get farther apart as the plane accelerates.
D. The dots would be close together to start, get farther apart, and become close together again as the airplane levels off at cruising speed.
Standardized Test Practice
2. Which of the following statements about drawing vectors is false?
Multiple Choice
Chapter
2
A. A vector diagram is needed to solve all physics problems.
B. The length of the vector should be proportional to the data.
C. Vectors can be added by measuring the lengths of each vector and then adding them together.
D. Vectors can be added in straight lines or in triangle formations.
3. The graph shows the motion of a person on a bicycle. When does the person have the greatest velocity?
Multiple Choice
Chapter
2 Standardized Test Practice
A. section I
B. section III
C. point D
D. point B
4. When is the person on the bicycle farthest away from the starting point?
Multiple Choice
Chapter
2 Standardized Test Practice
A. point A
B. point B
C. point C
D. point D
5. Over what interval does the person on the bicycle travel the greatest distance?
Multiple Choice
Chapter
2 Standardized Test Practice
A. section I
B. section II
C. section III
D. point IV
6. A squirrel descends an 8-m tree at a constant speed in 1.5 min. It remains still at the base of the tree for 2.3 min, and then walks toward an acorn on the ground for 0.7 min. A loud noise causes the squirrel to scamper back up the tree in 0.1 min to the exact position on the branch from which it started. Which of the graphs shown on the next slide would accurately represent the squirrel’s vertical displacement from the base of the tree?
Multiple Choice
Chapter
2 Standardized Test Practice
Multiple Choice
Chapter
2 Standardized Test Practice
A. Image I
B. Image 2
C. Image I
D. Image 2
Standardized Test Practice
7. Find a rat’s total displacement at the exit if it takes the following path in a maze: start, 1.0 m north, 0.3 m east, 0.8 m south, 0.4 m east, finish.
Extended Answer
Chapter
2