An object needs to have some sort of force exerted on it to be put into motion. There are no "unnatural" forces, therefore any object put into motion will have been done so "naturally."
There would have to be an unbalanced force put an object in motion but once in motion no force is necessary for it to remain in motion
Natural motion: Where he states that objects naturally seek a place of restImposed Motion: Forces exerting on an object will allow it to move
time
an object in motion will stay in motion unless acted upon another force. so really any thing could put somthing in motion. your hand, a car,train?
Both include motion. Kinetic energy is an object put into motion and potential energy is the energy an object has when it's still or at rest.
Time and Speed Time and Speed
Friction can stop an object in motion eventually. Friction causes drag on the object's motion energy and slows the object down by transferring the energy from one type to another. When the energy which acted on the object to put the object in motion is fully transferred, the object's motion will stop in the direction the motion and friction are applied. An example of this type of friction is the brake on a car. Friction can, however cause the object to change the direction of motion and simply stop affecting the object afterward. An example of this type of friction is the bumper rail of a pool table.
In simple cases, you would put time on the horizontal axis.
In simple cases, you would put time on the horizontal axis.
when can you say that the object is in motion
Newton's first law of motion is often stated as: "An object at rest will stay at rest unless acted upon by an outside force. An object in motion will remain in motion at a constant speed and direction unless acted upon by an outside force." Motion, If an object is not ifluenced by any force other then its motion, its velocity will naturally remain constant. i.e, it will continue to move along in a perfectly straight line at a constant speed.
That is the object's 'speed'.