Distance,displacement,speed And Velocity Flashcards
Distance
Scalar quantity,tells you how much ground an object has covered
Displacement
Vector quantity,not only states the length of the path but also had direction an object has moved
Speed
Refers to how fast an object is moving,regardless of its direction,scalar quantity
Speed calculation
Distance divided by time
Velocity
Vector quantity,gives both speed and direction of movement of an object
Constant speed
Speed is unchanging
Constant velocity
Object moves at a constant speed in a constant direction
When does acceleration happen?
When there is a change in velocity
When does acceleration happen?
When there is a change in velocity
What causes a change in velocity?
-changing speed
-changing direction
Calculation acceleration
Dividing the change in velocity by time taken for the change
Positive acceleration
Increase in velocity
Negative acceleration
Decrease in velocity
What happens when you’re spinning in a circle?
-velocity is constantly changing
-speed can still be constant
What does a steep gradient in a distance time graph mean?
High speed
What does a horizontal line mean on a distance time graph?
Suggests no movement
What does a steep gradient mean on a velocity time graph?
High acceleration
What does the are under a velocity time graph mean?
Gives the displacement of the object
