Newtons laws of motion

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definition of force

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Forces cause changes in an object's velocity.

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SI unit of force

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Newton

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18 Terms

1
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definition of force

Forces cause changes in an object's velocity.

2
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SI unit of force

Newton

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types of force

Forces are either pushes or pulls

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Contact forces

Arise from physical contact between objects

5
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what is Newtons first law

An object persists in its state of rest or uniform motion unless acted upon by an unbalanced, external force.

6
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what is inertia

The natural tendency of an object to resist acceleration.

7
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what is gravity’s affect on objects

constantly acts on objects

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what are balanced forces

When multiple forces on an object cancel each other out.

9
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what is newtons second law

The acceleration of an object is directly proportional to the net external force acting on it and inversely proportional to its mass.

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what is mass

the amount of stuff in an object

11
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what is weight

the Gravitational force exerted by the earth on an object

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what is newtons third law

For every action, there is an equal and opposite reaction.

13
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what is equal magnitude

Forces exerted by interacting objects are equal in magnitude.

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what is opposite directions (forces)

Forces exerted by interacting objects are opposite in direction.

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what is a free body diagram

Represent forces acting on an object.

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how to draw a Free body diagram

  • Only include forces acting on the object of interest.

  • Do not assume the normal force equals the weight force.

  • Model the object as a particle (dot).

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what is Normal Forces

Force perpendicular to the surface.

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what is force of gravity

Force exerted by gravity on the object.