Podcast
Questions and Answers
What is the definition of speed?
What is the definition of speed?
- A change in speed and/or directions
- The rate an object moves
- Distance traveled over time (correct)
- Measurement of speed in a given direction
If a car drives 50 miles per hour on a straight road, what is this an example of?
If a car drives 50 miles per hour on a straight road, what is this an example of?
speed
What can be inferred from a hiker walking 250 meters in 30 minutes?
What can be inferred from a hiker walking 250 meters in 30 minutes?
speed
What is the dog's running speed if it ran 30 meters per minute?
What is the dog's running speed if it ran 30 meters per minute?
What does the airplane flying 480 miles in 1.5 hours exemplify?
What does the airplane flying 480 miles in 1.5 hours exemplify?
What is the definition of velocity?
What is the definition of velocity?
What does the airplane flying 200 miles per hour east for 30 minutes demonstrate?
What does the airplane flying 200 miles per hour east for 30 minutes demonstrate?
If the ball traveled 30 meters per second toward the catcher, what term describes this?
If the ball traveled 30 meters per second toward the catcher, what term describes this?
What term describes Superman flying 350 miles per hour from Paris to Houston?
What term describes Superman flying 350 miles per hour from Paris to Houston?
When the rock rolled north down the hill at a steady pace, what is this an example of?
When the rock rolled north down the hill at a steady pace, what is this an example of?
What is the definition of acceleration?
What is the definition of acceleration?
What does it mean when a truck travels 50 miles per hour on a curved road?
What does it mean when a truck travels 50 miles per hour on a curved road?
What happens when a soccer ball rolls to a stop on the field?
What happens when a soccer ball rolls to a stop on the field?
What does a jet plane speeding up for takeoff indicate?
What does a jet plane speeding up for takeoff indicate?
When a roller coaster car speeds around a loop, what is this an example of?
When a roller coaster car speeds around a loop, what is this an example of?
What is the definition of motion?
What is the definition of motion?
The formula for speed is S = D/T, where S stands for ______.
The formula for speed is S = D/T, where S stands for ______.
What does the term velocity refer to?
What does the term velocity refer to?
What describes a change in the rate of speed and/or change in direction?
What describes a change in the rate of speed and/or change in direction?
What does positive acceleration mean?
What does positive acceleration mean?
What does negative acceleration or deceleration indicate?
What does negative acceleration or deceleration indicate?
What does distance refer to?
What does distance refer to?
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Study Notes
Speed
- Defined as the distance traveled over time.
- Example: A car drives at a speed of 50 miles per hour on a straight road.
- Example: A hiker covers 250 meters in 30 minutes, illustrating the rate of movement.
- Example: A dog runs at a speed of 30 meters per minute, reflecting its pace.
- Example: An airplane flies 480 miles in 1.5 hours, showcasing high-speed travel.
Velocity
- Defined as speed with a specified direction.
- Example: An airplane travels at 200 miles per hour east for 30 minutes, highlighting directional speed.
- Example: A ball moves at 30 meters per second toward the catcher, indicating its velocity.
- Example: Superman's journey at 350 miles per hour from Paris to Houston demonstrates high-velocity travel.
- Example: A rock rolls north down a hill steadily, illustrating directional movement.
Acceleration
- Defined as the change in speed and/or direction.
- Example: A truck moving at 50 miles per hour on a curved road exhibits acceleration due to direction change.
- Example: A soccer ball rolling to a stop represents deceleration as it slows down.
- Example: A jet plane accelerating for takeoff shows a significant increase in speed.
- Example: A roller coaster car speeding around a loop exemplifies rapid acceleration.
Motion
- Refers to the change in position of an object over time.
Key Formulas
- Speed calculation: S = D/T, where S is speed, D is distance, and T is time.
Types of Acceleration
- Positive acceleration indicates an increase in an object's speed.
- Negative acceleration, also known as deceleration, signifies a decrease in an object's speed (slowing down).
Distance
- Defined as the measure of how far an object moves during its motion.
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