I'm pretty sure its the acceleration. If its not that, its the Velocity.
translatory motion
Velocity. Velocity is a vector quantity that describes both the speed (magnitude) and direction of an object's motion.
when you know both speed and direction of an objects motion you know the velocity of an object.
velocity
Velocity
VELOCITY
The measure of an object's speed and direction is the object's velocity. Velocity is a vector quantity that includes both the speed (magnitude) and the direction of motion of an object.
This is not true. Acceleration includes direction, but speed does not. Speed in a particular direction is called velocity.
That is called "velocity".
Acceleration is the change in an ogjects speed or a change in an objects direction of motion or both of these. If instead of speed you use the word velocity , which is both an object's speed and its direction of motion, then you could say "acceleration is the change in an objects velocity" and that would cover all the possibilities in one statement.
Force vectors are quantities that have both magnitude and direction, representing the push or pull on an object. They affect the motion of objects by changing their speed, direction, or both. Forces can cause objects to accelerate, decelerate, change direction, or remain at rest.
The speed of an object tells you how fast it is moving. It does not provide information about the direction of the object's motion or whether it is changing direction. To fully describe an object's motion, you would need to also consider its velocity, which includes both speed and direction.