Concept explainers
(a)
The average velocity during time interval
(a)
Answer to Problem 2P
The average velocity during time interval
Explanation of Solution
Section 1:
To determine: The position vector
Answer: The position vector
Given information:
The value of
The position vector at time
Substitute
Section 2:
To determine: The position vector
Answer: The position vector
Given information:
The value of
The position vector at time
Substitute
Section 3:
To determine: The average velocity during time interval
Answer: The average velocity during time interval
Given information:
The value of
The formula to calculate average velocity is,
Substitute
Conclusion:
Therefore, the average velocity during time interval
(b)
The velocity and speed at time
(b)
Answer to Problem 2P
The velocity at time
Explanation of Solution
Section 1:
To determine: The velocity at time
Answer: The velocity at time
Given information:
The value of
The formula to calculate velocity at time
Substitute
Conclusion:
Therefore, the velocity at time
Section 2:
To determine: The speed at time
Answer: The speed at time
Given information:
The value of
The formula to calculate speed at
Calculate the magnitude of velocity as,
Conclusion:
Therefore, the speed during time interval
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Chapter 3 Solutions
Principles of Physics
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