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Chapters 11- 16: Science Exam

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Frame of reference

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Terms in this set (50)

Frame of reference

A system of objects that are not moving with respect to one another

Relative motion

A movement in relation to a frame of reference

The total length of the path between starting and ending points

Length of a straight line between starting and ending point
(Includes a direction)

A description of an objects speed and direction

A change of speed over time

A push or pull exerted on an object

How hard it would be to stop a moving object

Gravitational force

Depends on:
1. Mass of objects
2. Distance between them

Terminal velocity

The speed that an object falls to Earth once it has stopped accelerating due to force of gravity and air resistance being equal

Newton's 1st Law of Motion

"An object at rest will stay at rest and an object in motion will stay in motion until a net force is applied to it."

The tendency for an object to resist a change in motion

Newton's 2nd Law Of Motion

"If a net force acts on an object, then the object will accelerate in the direction of the net force"

Newton's 3rd Law Of Motion

"If one object exerts a force on a second object, then the second object exerts a force back on the first object that is equal and opposite in direction"

Force per unit area exerted on an object