Dynamics Flashcards
What is a scalar quantity described by
Described by their size only e.g. speed
What is a vector quantity described by
Described by stating their size and direction e.g. a car goes 12m/s to the east
What is a distance
The total physical distance traveled by an object or person
What is displacement
It’s a straight line from the starting point to the finishing point even with obstacles in the way
Is distance a scalar or a vector
It’s a scalar
Is displacement a scalar or a vector
It’s a vector
What is the equation for average speed
_ D
V= T
What distance is best to calculate average speed
Large distances
What is instantaneous speed
Speed measured at a specific moment in time
What is the best type of distance to measure instantaneous speed
Extremely short distances
Acceleration is defined as what
The rate of change of speed per unit time
What two ways can you find acceleration in a graph
Calculation of the gradient or a=V-U
T
Force is measured in what
Newtons (N)
A Newton balance can be used to measure what
Pulling/lifting forces
What is mass
Mass is the physical mater which makes up an object
