Gravity, pressure.
Any force will cause change in velocity if it isn't canceled by an equal, opposite force.
If the body is already in motion then yes.If the body is at rest then only if the force is sufficient to overcome any static friction that might be present.
There may be none, or there may be a whole bunch of forces on a body at rest. There's no way to tell. The only thing you know for sure is that if the body is at rest ... or even if it's moving but its speed and direction of motion aren't changing ... then all the forces on it, if any, add up to zero.
Because any object accelerates in the direction of the net force on it, at a rate proportional to the size of the force.
No, even when the body is at rest, it can still be influenced by external forces such as gravity, electromagnetic forces, or other physical phenomena. These forces can still have an impact on the body's position, energy, or state of motion.
You can't tell, without a lot more information.-- If the body was at rest when the forces began to act on it, then it'll movein the direction of the vector sum of the forces, which could be any directiondepending on the forces.-- If the body was already moving when the forces began to act on it, then itsacceleration will be in the direction of their vector sum, but you'd have to knoweverything about its original motion and the forces in order to figure out whatdirection the body will move, and when.
Newtons 1st law states that every body continues to be in its own state of rest or of uniform motion along a straight path unless it is compelled by any external force to change its state. If a force is exerted on a body the body will move but without force it will not move.
When an object is stationary, the forces acting on it are balanced. These forces could include gravitational force, normal force, frictional force, and any other external forces. The net force on the object is zero, resulting in no acceleration and the object remaining at rest.
While analyzing the mechanism if mass of the body and inertia force if it is not considered then it is called static force
Any force.
If a body is at rest ... or traveling at a constant speed in a straight line ... there could well be millions of forces acting on it. The only conclusion you can draw from the fact that it has no acceleration is that all the forces acting on it must add up to zero.
Inertia."Objects in motion tend to stay in motion, and objects at rest tend to stay at rest, unless acted on by an outside force."That is a wording of Newton's first law of motion, also known as the law of intertia.