Science
Physics

# What causes motion?

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###### 2007-10-15 18:23:33

If anything is acting on a partilce, it will keep moving along a straight line, with constant velocity (in all the inertial reference frames). In this sense, nothing causes the motion.

A change in this kind of motion, that is, an acceleration or a curve in the trajectory, is caused by a force, according to the Newton equation F = dp/dt. "Nowadays" we prefer to avoid the concept of force F, using instead the idea of field, which is independet from the particle and from its parameters (mass, charge, ... ): you can say that the field permeate the space, whether the particle is there or not.

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## Related Questions

Applied force to an object causes motion.

a pulling motion causes a normal fault

Applied force causes a change in motion. The change of motion can be from stationary to motion or a change of speed or acceleration.

Inertia is an action that can cause motion.

Inertia is the tendency of an object to resist a change in its motion.

energy causes motion wich causes change in the matter

Force causes acceleration. Acceleration is a change of speed or direction of motion.No force is necessary to maintain constant speed in a straight line. So you'd haveto say that force causes changes in motion.

One thing that causes the greatest increase of motion of molecules is an increase in temperature.

A balanced force will NOT cause a change in motion.

It has to do with the balance in your head.

There are several kinds of molecular motion. Thermal energy is one main cause of molecular motion.

Kinematics is the study of motion without regard to its causes where as kinetics is the study of the causes of motion; primarily concerned with forces.

an aplied force will change the motion of an object.Such as a thrust ,or an impact

Simple answer; energy. It takes energy to cause anything, including your breathing right now. Energy is used to put something in motion, which ALWAYS causes something else to be in motion, even if it is the air around the item being put in motion.

The description of motion is kinematics; the study of the causes of motion (interaction between forces and motion) is called dynamics.

One must apply an acceleration to change the state of motion of a mass

An applied force will change the motion of an object. Such as a thrust, or an impact.

An unbalanced force causes motion. This occurs when the net force does not equal zero.

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