If the group of forces on an object is unbalanced, then the object can't have
constant velocity. Its speed or the direction of its motion must change.
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.
unbalanced
Such an object is traveling at a constant speed in a straight line. Nothing will happen to it until the forces acting on it become unbalanced, or it runs into something.
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.
there is no acceleration if the body is moving with constant velocity
No. A glider that is moving at a constant speed and in a constant direction is at a constant velocity. In other words it is not accelerating. Therefore, all forces on it must be balanced.
Yes, if an unbalanced force acts on the book, such as friction, which will slow the book down and eventually cause it to stop.
A motion with a constant speed will always be moving the same speed A motion with a constant acceleration will constantly be gaining speed, and does not remain moving at the same speed.
When all forces are balanced, the object can either be moving at a constant velocity or be at rest. But because you asked for balanced forces on a moving object, it is moving at a constant velocity.
Yes. An object moving in a straight line at constant speed has constant velocity.
Not necessarily. Constant velocity also means no change in direction.