module 5 ISA4/ISC4 – Flashcards
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metabolic disorders
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-rickets
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Every object continues in a state of rest, or in a state of motion in a straight line at constant speed, unless it is compelled to change that state by forces exerted on it
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Newton's first law
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The acceleration produced by a net force on an object is directly proportional to the net force, is in the same direction as the net force, and it inversely proportional to the mass of the object. In symbols, F = ma
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Newton's second law
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To every action there is always an opposed equal reaction
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newton's third law
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the distance traveled per unit of time
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speed
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the rate at which velocity changes with time; the change in velocity may be in magnitude, or in direction, or in both.
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acceleration
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the speed of an object with specification of its direction of motion
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velocity
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the vector that specifies the change in position of a point or a particle in reference to a previous position.
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displacement
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objects at rest tend to remain at rest.
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inertia
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pushes or pulls
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force
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a machine is a device for multiplying forces or simply changing the direction of forces
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simple machine
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work becomes more efficient - easier than physical labor
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mechanical advantage
