Physics Flashcards
Define displacement
A straight line connecting the start and endpoints, specified in terms of length and direction.
Define speed
The rate of change of distance
Define velocity
The rate of change of displacement
Define acceleration
The rate of change of velocity (faster) deceleration = slowing
Define reaction time
The length of time it takes a driver to respond to a hazard
Define gradient
Slope of a hill of a graph = rise/run
Define Scalar quantity
A quantity, such as distance or time, that has a size but not a direction.
Define vector quantity
A quantity, such as displacement or velocity, that has a size and direction
Speed formula
Distance/time (measured in m/s)
Acceleration formula
Change in speed/total time
Final speed-initial speed/total time
(Measured in m/s/s or m/s2
In distance-time graphs, the gradient is…
The speed
In speed-time graphs, the gradient is…and the area inside is…
The acceleration and the distance
Km/h divided by what gives m/s?
3.6
Define distance
A measurement of how far apart objects are
