either resistance or inertia
A change in an objects velocity is called acceleration. Velocity is defined as an objects speed of travel AND its direction of travel. Acceleration can change only an objects speed, only its direction or both. If there is no acceleration acting on the object, then the velocity remains constant.
That's simply called a change in velocity. On the other hand, the rate of change in velocity - how quickly velocity changes - is called acceleration.
That is called acceleration.
Velocity is a change in an object's motion OR direction of motion.
The change in an object's velocity is determined by its acceleration. If the object's acceleration is positive, its velocity increases; if it is negative, the velocity decreases. The larger the acceleration, the quicker the change in velocity will be.
A change in position in a certain amount of time is called motion.
force
The state when objects are not yet in motion is called rest. This is when an object remains stationary with no change in position over time. Objects at rest have a velocity of zero.
A change in the position of an object is called a displacement. Velocity is the measure of the rate of change of displacement with respect to time.
That is called "velocity".
In all cases acceleration.
uniform motion