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S8P3- Force and Motion
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Gravity
Key Concepts:
Terms in this set (24)
Acceleration
The rate of change in an object's speed or velocity
Balanced Forces
a combination of forces on an object that produces a net force of zero. Does not cause a change to an object's velocity.
Displacement
is the length and direction of a straight line between two locations, or positions .
Distance
is a measure of the length of a path that a moving object travels .
Force
a push or pull on an object
Friction
is the force that resists motion between two surfaces .
Gravitational Force
is the force of attraction that exists between any two or more masses
Inertia
is the resistance to any change in the state of motion of any physical object .
Magnitude
is the strength of a force.
Motion
The change in an object's position over time.
Net Force
The sum of all forces acting on an object
Newton
SI unit of force
Newton's First Law
Scientific principle stating that an object at rest stay's at rest, and an object in motion stays in motion at the same speed and in the same direction, unless acted upon by an unbalanced force.
Newton's Second Law
The scientific principle stating that the net force acting on an object is equal to the object's mass multiplied by its acceleration.
Newton's Third Law
The scientific principle stating that for every action, there is an equal and opposite reaction.
Position
An object's location relative to a reference point.
reference point
A stationary object by which motion can be measured.
Speed
a unit rate that describes how fast something is moving; a measure of distance traveled per unit of time.
Unbalanced Force
a combination of forces on an object that produces a net force not equal to zero. Causes a change in velocity
Velocity
Speed in a given direction
m/s
SI unit for speed
m/s^2
SI unit for acceleration
N
SI unit for force
m/s + direction
unit for velocity
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