7 Questions
What is the unit of measurement for speed?
Meters per second
What is the difference between speed and velocity?
Speed is the rate of movement, while velocity is the rate of movement plus the direction
What happens to the acceleration of a car when it slows down?
The acceleration decreases
What is acceleration?
A change in the velocity of an object
Why does a car accelerate when it changes direction?
Because the car changes velocity
What is the formula to calculate speed?
Distance divided by time
What happens to the velocity of an object when it accelerates?
The velocity changes
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.
Understand the concepts of speed, velocity, and acceleration, including their definitions and units of measurement.
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