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Questions and Answers
What is the difference between speed and velocity?
What is the difference between speed and velocity?
- Velocity is measured in meters per second, speed is measured in kilometers per hour
- Speed includes direction, velocity does not
- Velocity includes direction, speed does not
- Speed is a scalar quantity, velocity is a vector quantity (correct)
What does a displacement-time graph represent?
What does a displacement-time graph represent?
- Change in position of an object (correct)
- Distance traveled by an object
- Acceleration of an object
- Change in velocity of an object
How can you determine if a body is at rest from a velocity-time graph?
How can you determine if a body is at rest from a velocity-time graph?
- By a horizontal line at zero velocity (correct)
- By a straight line with positive slope
- By a vertical line at constant velocity
- By a curve with negative slope
When is a body said to have uniform acceleration?
When is a body said to have uniform acceleration?
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Why is it important to calculate the area under a velocity-time graph?
Why is it important to calculate the area under a velocity-time graph?
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What happens to the acceleration of free fall near Earth's surface?
What happens to the acceleration of free fall near Earth's surface?
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