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Force and Motion 8A

Study Guide for Test!

QuestionAnswer
What is 'force'? a push or pull exerted on an object
What 2 things are used to find speed? Distance/Time
How do you calculate Force? (Hint, equation) F = ma ; Force is equal to the mass multiplied by the acceleration
What does F=ma stand for? Force = mass x acceleration
What is 'inertia'? Resistance of an object to change in its motion (it still wants to keep moving, or it wants to stay put)
What is displacement? how far an object is from its STARTING position, in the direction from its start point --> to end point
What 2 things do we need to calculate acceleration? force (F) and mass (m)
What unit of measurement is used for force? Newtons (N)
What unit of measurement is used for mass? kg, but lbs is also correct.
What unit of measurement is used for acceleration? m/s squared, it can also be measured with other distance/time unit like mph (miles/hour) or (inches/second)
Motion a change in position of an object over time
Magnitude The amount or size of a force
If forces are balanced... there is no motion in the object (the --> Net force <-- is zero)
If forces are unbalanced... there IS change in motion of the object (one force is greater --> than the other) and there will be a Net force
Newton's Third Law of Motion For every ACTION, there is an equal and opposite REACTION
Newton's First Law of Motion an object at rest stays at rest unless acted upon by an unbalanced force. an object in motion will also stay in the same speed and direction unless an unbalanced force acts upon it.
Newton's Second Law of Motion The motion of an object depends on its mass and the net force applied to it
Net Force the SUM of all forces acting on an object
Mass the amount of matter in an object
Created by: catrussell830
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