Energy Of Motion: Unit Vocabulary

Vocabulary:Speed and Velocity

Actual Definition:the speed and direction of moving objects

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Velocity

Acceleration

a change in the velocity (speed, direction, or both) of a body (related word: accelerate)

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distance traveled per unit of time

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Speed

downward movement under the force of gravity only.

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Free Fall

the force that  attracts a body toward the center of the earth, or toward any other physical body having mass.

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Gravity

a force that acts on a body moving in a circular path and is directed toward the center around which the body is moving.

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Centripetal Force

​Actual definition:

An object will maintain its state of motion, whether at rest or in motion, unless an external force causes it to change. 

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Newton's 1st Law

the force applied to an object is equal to its mass multiplied by its acceleration, or

𝐹=𝑚𝑎

. This law explains that an object's acceleration is dependent on both its mass and the amount of force applied to it. 

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Newtons 2nd Law

for every action, there is an equal and opposite reaction

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Newtons 3rd Law

a force that opposes the motion of a body across a surface or through a gas or liquid

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Friction

 the forces that are in opposition to the relative motion of an object as it passes through the air.

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Air Resistance

an object's resistance to a change in motion

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Inertia

the amount of matter in an object

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Mass

the force of gravity on an object

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Weight

a pull or push that is applied to an object

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Force

a situation where multiple forces acting on an object are equal in magnitude but opposite in direction, effectively canceling each other out, resulting in no net force and causing the object to remain stationary or move at a constant velocity

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Balanced Forces

a set of forces acting on an object where the net force is not zero, meaning the forces are not equal in magnitude or direction, causing the object to accelerate or change its state of motion

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Unbalanced Forces