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zach smith

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QuestionAnswer
Acceleration The change in an object's speed or direction.
Average speed The distance an object travels per unit of time.
Contact force A force that must touch an object to change its speed and direction.
Force A push or pull that causes something to change its speed or direction.
Friction A force that occurs when two things move past each other and rub together.
Gravity A force that acts without physical contact to pull two objects toward each other.
Joule The unit of work and energy.
Magnitude The size of something such as a force.
Net force The amount by which the opposing forces acting on an object are unequal.
Newton The metric unit used to measure force or weight.
Newton's first law of motion If the forces acting on an vobject are balanced the object will continue doing what it is doing.
Newton's second law of motion The acceleration of an object is related to the net force acting on it and the mass of the object.
Newton's third law of motion For every action there is an equal and opposite reaction.
Noncontact force A force that acts on an object to change its speed or direction from a distance.
Normal force The force that pushes up to support the weight of an object.
Simple machine Any device that changes forces or direction of forces.
Velocity The speed and the direction of motion of an object.
Work The energy needed to move something a certain distance the unit of work is the joule.
Created by: 12smithz
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