0s1s2s3sOm 2 m 8 m18 m32 m50 mThe diagram above presents the position and elapsed time of a motorbike that starts from rest andaccelerates at a constant rate. Use it to answer questions 1 and 2.1. What is the average velocity of the motorbike during first 5 s?A. O m/s B. 5 m/s2. What is the acceleration of the motorbike?A. 0 m/s3. An object moves at a constant speed of 6 m/s. This means that the object:A. Increases its speed by 6 m/s every secondC. 10 m/s D. 15 m/sE. 20 m/sB. 2 m/sC. 4 m/sD. 6 m/sE. 8 m/sB. Decreases its speed by 6 m/s every secondC. Doesn't moveD. Has a positive accelerationE. Moves 6 meters every second4. A toy car moves 8 m in 4 s at the constant velocity. What is the car's velocity?A. 1 m/sВ. 2 m/sC. 3 m/sD. 4 m/sE. 5 m/s5. A train moves at a constant velocity of 50 km/h. How far will it move in 0.5 h?C. 25 kmA. 10 kmB. 20 kmD. 45 kmE. 50 km6. A boat can move at a constant velocity of 8 km/h in still water. How long will it take for the boat tomove 24 km?A. 2hВ. ЗhC. 4 hD. 6 hE. 8 h7. A bicyclist moves at a constant speed of 4 m/s. How long it will take for the bicyclist to move 36 m?A. 3sВ. 6 sВ. 12 sD. 9sE. 18 sThe graph represents the relationship between velocity and time for an object moving in a straight line.Use this graph to answer questions 8 and 9.v (m/s)1t (s)8. Which of the following statements is true?A. The object speeds upB. The object slows downC. The object moves with a constant velocityD. The object stays at restE. The object is in free fall9. What is the velocity of the object at 5 s?A. 1 m/sB. 2 m/sC. 3 m/sD. 4 m/s E. 5 m/s

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The diagram above presents the position and elapsed time of a motorbike that starts from rest and accelerates at a constant rate. Use it to answer questions 1 and 2. 1. What is the average velocity of the motorbike during first 5 s? A. O m/s B. 5 m/s C. 10 m/s D. 15 m/s E. 20 m/s

The diagram above presents the position and elapsed time of a motorbike that starts from rest and accelerates at a constant rate. Use it to answer questions 1 and 2. 1. What is the average velocity of the motorbike during first 5 s? A. O m/s B. 5 m/s C. 10 m/s D. 15 m/s E. 20 m/s

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter2: One Dimensional Motion

Section2.8: Average And Instantaneous Acceleration

Problem 2.7CE: Kinematics graphs are great for showing how a quantity depends on time. For example, an...

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Units and Dimensions

These are generally defined as the terms which precede or describes the dimensions further. These are also further divided into two parts namely fundamental units and the derived units.

Question

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0s1s
2s
3s
Om 2 m 8 m
18 m
32 m
50 m
The diagram above presents the position and elapsed time of a motorbike that starts from rest and
accelerates at a constant rate. Use it to answer questions 1 and 2.
1. What is the average velocity of the motorbike during first 5 s?
A. O m/s B. 5 m/s
2. What is the acceleration of the motorbike?
A. 0 m/s
3. An object moves at a constant speed of 6 m/s. This means that the object:
A. Increases its speed by 6 m/s every second
C. 10 m/s D. 15 m/s
E. 20 m/s
B. 2 m/s
C. 4 m/s
D. 6 m/s
E. 8 m/s
B. Decreases its speed by 6 m/s every second
C. Doesn't move
D. Has a positive acceleration
E. Moves 6 meters every second
4. A toy car moves 8 m in 4 s at the constant velocity. What is the car's velocity?
A. 1 m/s
В. 2 m/s
C. 3 m/s
D. 4 m/s
E. 5 m/s
5. A train moves at a constant velocity of 50 km/h. How far will it move in 0.5 h?
C. 25 km
A. 10 km
B. 20 km
D. 45 km
E. 50 km
6. A boat can move at a constant velocity of 8 km/h in still water. How long will it take for the boat to
move 24 km?
A. 2h
В. Зh
C. 4 h
D. 6 h
E. 8 h
7. A bicyclist moves at a constant speed of 4 m/s. How long it will take for the bicyclist to move 36 m?
A. 3s
В. 6 s
В. 12 s
D. 9s
E. 18 s
The graph represents the relationship between velocity and time for an object moving in a straight line.
Use this graph to answer questions 8 and 9.
v (m/s)
1t (s)
8. Which of the following statements is true?
A. The object speeds up
B. The object slows down
C. The object moves with a constant velocity
D. The object stays at rest
E. The object is in free fall
9. What is the velocity of the object at 5 s?
A. 1 m/s
B. 2 m/s
C. 3 m/s
D. 4 m/s E. 5 m/s

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