If the sum of all forces on an object is zero, then the object remains in constant,
'Constant uniform motion' means motion in a straight line at a constant speed.
The physical description of such motion is "constant velocity".
"Rest" is just constant velocity with a speed of zero.
If the sum of all forces on an object is NOT zero, then the object's velocity must
change. The change may consist of speeding up, slowing down, or turning in a
If the sum of the forces is in the same direction as the object's motion, then
the object must speed up.
The Condition of Equilibrium, Force equal zero, is the condition of an object at rest or moving at constant velocity. Non-Equilibrium Condition, Force is not zero, is the condition for an object to move with increasing velocity.
A body is moving at constant velocity including zero at Equilibrium Condition, No change of energy or zero force. With force a body can accelerate, move with increasing velocity.
Its velocity is increasing or decreasing (its velocity is not constant).
The condition for an object to stay at rest or if moving, moving at a constant velocity is that the sum of forces acting on the object be zero or that no force acts on the object.
Velocity is Speed in a given direction. Moving at constant velocity is equivalent to say moving with a constant speed in a specified direction. So, moving at constant velocity implicitly means moving with constant speed.
No resultant forces act upon it
there is no acceleration if the body is moving with constant velocity
a "body" "moving body" an "object" is moving with constant velocity. [OR] a "body" is moving with constant velocity.
A car moving at constant speed in a straight line is also moving at constant velocity.
In order for an object to stay at rest it must have a constant velocity of zero. If the velocity increases, then the object will accelerate and will no longer be at rest.
The net force on an object moving at a constant velocity is zero.
Uniform circular motion. The speed is constant but the direction thus the velocity is variable.