Kinematics Flashcards
Total movement of an object without any regard of directions. It is a scalar quantity and therefore has only magnitude
Distance
As defined as the change in position of an object. It is a vector quantity and has magnitude and direction.
Displacements
It is represented as an arrow that points from the starting position to the final position. It seems like a shortcut.
Displacements
Speed is a scalar quantity. The…..of a moving body is the actual speed at which it is moving at any instances.
Instantaneous speed
Speed formula
V= ds/dt
Formula of speed using differentials
d/du ( u^n )= nu^n-1
Where:
u=t
du= dt
n= exponents
Often a body in motion does not move at a constant speed. During even in short trips, a car speeds up( accelerates), and slows down ( decelerates). Thus, the total distance traveled by a body during a period of time is often the results of an….
Average speed
Average speed equation
V= s/t
Average speed unit
V
Distance sign
s
If the speed is truly constant ( uniform speed) the equation will be
V=s/t
As useful as it is, the average speed of an object does not reveal anything about the directions of a motion. To take into account of directions, the vector concept of the velocity is needed.
Average velocity
Average velocity formula
V = s/t where s is displacement and t is the elapsed time
In average velocity, for uniform motion the formula is
V= s/t
In solving average velocity, before solving the s. Consider the formula first..
× 1000m/1km which results the unit of “m”
