Motion in one dimension Flashcards
What is a point of reference/origin
The position of an object when referred to another point/object
What is position
The place where an object finds itself as observed from a point of reference
What is a frame of reference
The reference point (origin) combined with a set of directions- such as an axes system, which makes it possible to define the position of an object at any time
Is position in a frame of reference a scalar or vector quantity
vector
What is one dimension movement
1D movement is movement along a straight line and can be either one direction or the opposite direction
What is distance
The length of the path along which an object moves from one position to the next
What is displacement
The change in position of an object
True or false
The magnitude of the displacement is always bigger or equal to the distance
False
The magnitude of the displacement is always smaller or equal to the distance
What is speed
The distance covered over a time interval
What is instantaneous speed
The speed of an object in a very short time interval (infinitesimal interval) and is the same as the size of the instantaneous velocity
What is the instantaneous speed in a car measured by
a speedometer
True or false
speed, average speed, and instantaneous speed can have direction
False
They have no direction and are always positive
What does the velocity of an object depend on
The displacement and time
What is velocity
The displacement measured in a certain time interval
True or false
When a moving objects velocity doesn’t change during the entire movement it is referred to as the constant/ average velocity
true
