Podcast
Questions and Answers
What distinguishes speed from velocity?
What distinguishes speed from velocity?
If a car travels 180 km in 3 hours, what is its speed?
If a car travels 180 km in 3 hours, what is its speed?
How is speed calculated?
How is speed calculated?
What would increase an object's speed based on the content?
What would increase an object's speed based on the content?
Signup and view all the answers
If a person jogs 36 meters in 4 seconds, what is their speed?
If a person jogs 36 meters in 4 seconds, what is their speed?
Signup and view all the answers
Study Notes
Speed
- Speed is a change of position over time.
- It also shows how fast or slow an object is moving.
- Speed is a scalar quantity, meaning it only has magnitude.
- Velocity is a vector quantity, having both magnitude and direction.
Formula
- Speed = change of position / time
- V = Δx / t (where V = speed, Δx = change in position, t = time)
- Units are typically meters per second (m/s).
Calculating Speed
-
The greater the distance traveled in a shorter time, the greater the speed.
-
A steeper slope on a distance-time graph indicates a greater speed.
-
The slope of a distance-time graph represents speed.
- Speed = rise / run where rise is the change in distance and run is the change in time.
-
A horizontal line on a distance-time graph means the object is stationary.
-
A downward sloping line on a distance-time graph indicates the object is going back towards its starting point.
Examples
- Example 1: A bus travels 250 meters in 10 seconds. Speed = 25 m/s.
- Example 2: A person walks 45 meters in 5 seconds. Speed = 9m/s
- Example 3: A boat travels 140 kilometers in 2 hours. Speed = 70 km/hr
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Related Documents
Description
This quiz tests your knowledge on the concept of speed, including its definition, formula, and how to calculate it. You'll also explore the graphical representation of speed on distance-time graphs. Challenge yourself to apply this knowledge through practical examples.
