All Flashcards
Define speed
The measurement of the rate of change in distance. Speed is a scalar quantity and can be expressed in a number of units.
Define Velocity
The measurement of the rate of change in displacement. It is a vector quantity and should only be expressed in the S.I units of displacement and time
All components needed for acceleration questions
Final velocity (v)
Initial velocity (u)
Time (t)
Acceleration (a)
What does a constant acceleration produce
A straight line or linear slope (rise/run)
Who invented acceleration?
Galileo during the 1600’s
What is a vector quantity
Require a direction to be meaningful
Also a magnitude and a unit
What is a scaler quantity
Scaler quantities require only a magnitude and a unit for it to be meaningful
What is distance?
Distance is a scalar quantity. It is the total amount traveled by an object from start to finish.
What is displacement?
Displacement is a vector quantity. It is the measurement of how far an object is from where it started
Convert km/h to m/s
x 1000 then divide 3600
What are S.I. Units
It stands for Scientific international
Standard units of measurement of physical properties
Convert m/s to km/h
Divide 1000 then x 3600
The rate of which velocity changes occur is called what?
Acceleration
Define Newtons 1st Law
An object at rest tends to stay at rest and an object in motion tends to stay in motion unless acted upon by an unbalanced force
Define Balance Force
Equal forces in opposite directions that produce no motion
