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Questions and Answers
What is the unit of measurement for speed?
What is the unit of measurement for speed?
- Meters per second (correct)
- Kilometers per hour
- Velocity per second
- Distance per time
What is the difference between speed and velocity?
What is the difference between speed and velocity?
- Speed is the rate of movement, while velocity is the rate of movement plus the direction (correct)
- Speed is the direction of an object, while velocity is the rate of movement
- Speed is the rate of movement, while velocity is the rate of movement minus the direction
- Speed is the direction of an object, while velocity is the rate of movement minus the direction
What happens to the acceleration of a car when it slows down?
What happens to the acceleration of a car when it slows down?
- The acceleration decreases (correct)
- The acceleration becomes zero
- The acceleration remains the same
- The acceleration increases
What is acceleration?
What is acceleration?
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Why does a car accelerate when it changes direction?
Why does a car accelerate when it changes direction?
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What is the formula to calculate speed?
What is the formula to calculate speed?
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What happens to the velocity of an object when it accelerates?
What happens to the velocity of an object when it accelerates?
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Study Notes
Motion and Speed
- Speed refers to the rate at which an object moves over a certain amount of time.
- Speed is calculated by dividing distance (in meters) by time (in seconds).
- The unit of measurement for speed is meters per second (m/s).
Velocity
- Velocity is the speed of an object plus the direction it travels.
- It includes both speed and direction.
Acceleration
- Acceleration is a change in the velocity of an object.
- If a car speeds up, its acceleration increases.
- If a car slows down, its acceleration decreases.
- Any change in velocity is acceleration, including changes in direction.
- Acceleration occurs when there is a change in speed or direction of an object.
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Description
Understand the concepts of speed, velocity, and acceleration, including their definitions and units of measurement.
