Friction and Gravity are the two forces that affects an object's velocity. Friction is caused by both air and the surface on which an object is moving. Gravity is caused by Earth.
Gravity and friction there are others also like magnetism for example..
0 velocity 0 acceleration The forces on the object are balanced: it is in equilibrium. (The forces are balanced on any object with 0 acceleration, even if it is moving.)
Forces can be divided into pushes, pulls and twists. I'm not sure if that is the type of answer you were looking for though. A range of different forces can affect the motion of objects depending on the circumstances e.g. thrust, lift, air resistance, water resistance etc
-- An unbalanced group of forces on an object causes the object to accelerate in the direction of the net force. -- If an object is not moving, then the group of forces on it must be balanced, else it would be accelerated.
All objects accelerate if the forces acting on them are not balanced.
Centripetal forces can.
In all cases acceleration.
Gravitational forces between objects depend only on their masses and the distance between them. Velocity has no effect.
Forces accelerate the object, a=f/m and acceleration changes the objects velocity.
When the forces on an object are unbalanced, the object undergoes acceleration. Its direction is the direction of the net effective force, and its magnitude is the magnitude of the net effective force divided by the object's mass.
Gravity and friction.
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.
No. The rate of change of an object's velocity depends only on the forces acting on it.
That depends. If no forces act on the object, it will. If forces do act on the objects, such forces may change the object's velocity.
Forces can stop or start an object in motion, or change its velocity. They can also change the shape of objects.
friction and gravity
Yes