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Strength or energy as an attribute of physical action or movement.
An example would be using your strength to push or pull something.

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The rate at which someone or something is able to move or operate.
An example of speed is a car being driven 45 miles per hour.
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A vehicle's capacity to gain speed within a short time.
You change speed when you go faster. ... Acceleration is a change in velocity divided by time.
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The action or process of moving or being moved.
For example, suppose that you shoot an arrow into space.
http://www.scienceclarified.com

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A basis or standard for evaluation, assessment, or comparison; a criterion.
An example  An example of a reference point that is moving is when you look out the window of a car and notice that you are moving faster than the car next to you.
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Balance forces are two forces acting in opposite directions on an object, and equal in size.
An example would be the force exerted by each person is equal, but they are pushing in opposite directions, in this case together.
http://utahscience.oremjr.alpine.k12.ut.us

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In physics, the Net force is the overall force acting on an object. To calculate net force, the body is isolated and interactions with the environment or other constraints are represented as forces and torques in a free-body diagram.
For example in free fall, the net force on an object equals its weight - the one force pulling on it.
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The average speed of an object in an interval of time is the distance travelled by the object divided by the duration of the interval.
For example,  we might say that a car has an average  speed of 25 miles per hour. Its average velocity might be 25 miles per hour due east.
http://study.com

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Is the friction that exists between a stationary object and the surface on which it's resting.
An example would be when you try to push an object alongside a surface.
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Also known as sliding friction or moving friction, is the amount of retarding force between two objects that are moving relative to each other.
An example would be rubbing both hands together to create heat.
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The resistance that one surface or object encounters when moving one another.
An example would be a sled sliding across snow or ice.

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