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Questions and Answers
How is acceleration calculated?
How is acceleration calculated?
- Dividing time by change in velocity
- Dividing velocity by time
- Dividing change in velocity by time (correct)
- Dividing distance by time
Why is acceleration considered a vector quantity?
Why is acceleration considered a vector quantity?
- Because it has direction but no magnitude
- Because it has magnitude but no direction
- Because it has both magnitude and direction (correct)
- Because it varies with distance
What is the definition of velocity?
What is the definition of velocity?
- The rate at which an object changes its temperature
- The rate at which an object changes its color
- The rate at which an object changes its position (correct)
- The rate at which an object changes its shape
What does uniform motion refer to?
What does uniform motion refer to?
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How is acceleration defined?
How is acceleration defined?
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What is the characteristic of an object in uniform motion?
What is the characteristic of an object in uniform motion?
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What type of quantity is velocity?
What type of quantity is velocity?
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How is displacement related to velocity?
How is displacement related to velocity?
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Study Notes
Motion and Acceleration
- Acceleration is calculated as the rate of change of velocity, often expressed as Δv / Δt, where Δv is the change in velocity and Δt is the time over which the change occurs.
- Acceleration is considered a vector quantity because it has both magnitude (amount of movement) and direction, which means it can be described in terms of its size and direction.
Velocity
- Velocity is defined as the rate of change of an object's position with respect to time, often expressed as displacement per unit time.
- Velocity is a vector quantity, having both magnitude (speed) and direction.
Uniform Motion
- Uniform motion refers to the motion of an object at a constant velocity, meaning the object moves at a constant speed in a straight line.
- The characteristic of an object in uniform motion is that it maintains a constant velocity, with no acceleration or deceleration.
Displacement and Velocity
- Displacement is related to velocity in that it is the total distance traveled by an object in a specific direction, whereas velocity is the rate of change of that displacement.
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