Lesson 2. Flashcards
What is a vector?
Quantities that have a magnitude (size) and a direction.
What is a scalar?
Quantities that have magnitude (size) but no direction.
List three examples of vectors.
Velocity, displacement and acceleration.
List three examples of scalars.
Speed, time and distance.
Define “displacement.”
The direct length between any two points when measured along the minimum path between them.
Define “distance.”
The complete length of the path between any two points.
Define “speed.”
Speed is the distance traveled per unit of time. It is a scalar quantity.
Define “velocity.”
The speed of something in a given direction. It is a vector quantity.
What are the differences between displacement and distance?
The complete length of the path between any two points is called distance. However, displacement is the direct length between any two points when measured along the minimum path between them.
To calculate distance, the direction is not considered, as it is a scalar. To calculate displacement, the direction is taken into consideration, as it is a vector.
COMPLETE THE SENTENCE:
Velocities in the opposite direction are….
Negative.
What is the difference between speed and velocity?
Speed is the time rate at which an object is moving along a path, while velocity is the rate and direction of an object’s movement. Speed is a scalar value, while velocity is a vector.
