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Force Unit (Important Words (Observation (Information that is gathered…
Force Unit
Important Words
Observation
Information that is gathered through your senses.
Hypothesis
Potential answer to your question that can be tested.
Experiment
Controlled scientific study of specific variables
Variable
Things that can change.
Independent Variable
Changed by the researcher.
Responding Variable
What changes because of what the researcher did.
Control
Variables kept constant so they don’t affect the outcome.
Force
Push or pull
Acceleration due to gravity
9.8 m/s squared
Contact force
Objects touch
Field Force
Act around an object
Newton's Laws
Newton's Second Law
Force = Mass * Acceleration
Newton's Third Law
For every action, there is an equal and opposite reaction
Newton's First Law
An object in motion stays in motion and an object at rest stays at rest
Projectile
An object that is thrown or shot through the air.
Trajectory
The projectile's path
Projectile's always have a curved path
Momentum
Umph behind an object
Momentum = mass times velocity
Conservation of momentum
Moved from object to object but not lost
Inertia
The tendency of an object to resist change in motion.
The more mass the more inertia
Friction
Force between two objects that are touching and it acts opposite to the motion
Affected By
Force between surfaces texture of the surface
Veloctiy
distance/time with direction
Speed
distance/time with direction
Acceleration
Velocity/Time
Delta (Triangle)
Is a change in veloctiy