It is moving in a negative direction, such as backing out of a driveway or parking space.
When an object moves
When an object moves
It's called deceleration.
Baliw
Baliw
By the relative motion of neighbour objects
In simple motion can be described as the movement of any object.
Baliw
the object's velocity
An objects motion or speed is distance divided by time.
Accelerating.
The tennis ball