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Motion Review

QuestionAnswer
What is velocity? Speed in a given direction
What is speed? Measure of distance traveled per unit of time
Explain displacement. The change in position from an object's original location
What is distance? Amount of ground an object has covered during its motion
Explain acceleration. Tell three ways an object can accelerate. Rate of change in an object’s velocity or speed; speed changes, direction changes, or both speed and direction change
Explain why deceleration is also acceleration. Acceleration is the rate of change and deceleration is still changing
What does a flat line on a distance/time graph represent? Stopped
Greater slope up means ____________ on a distance/time graph. Faster speed
Greater slope down means ____________ on a distance/time graph. Returning to stop
What does a flat line on a velocity/time graph represent? Constant speed
What does an upward slope on a velocity/time graph represent? Acceleration
What does a downward slope on a velocity/time graph represent? Deceleration
What does constant velocity mean? Constant speed in a given direction
Tell three ways velocity can change. Speed changes, direction changes, or both speed and direction change
If an object’s mass increases, its acceleration will ______________. Decrease
Force = _________ x ____________ Force= mass x acceleration
What are unbalanced forces? Unequal forces that act on an object
What are balanced forces? Equal forces that act on an object in opposite directions
Net force = _______________ The sum of all forces acting on an object
What type of force does not cause acceleration? Balanced force
What is magnitude? Size
What is vector? Direction
Explain Newton’s First Law of Motion. A body in motion will stay in motion and a body at rest will stay at rest until an unbalanced force acts upon it
Greater mass = __________ inertia Greater
Explain Newton’s Second Law of Motion. When a net force acts on an object, the object will accelerate in the direction of this net force
Explain Newton’s Third Law of Motion. For every force or action there is an equal and opposite reaction
What is inertia? Stay constant
What is another name for Newton’s First Law of Motion? The Law of Inertia
What does air resistance depend upon? Size, shape, speed, and surface area of the object falling
What is the formula for velocity? Distance/Time
What is the difference between speed and velocity? Velocity is the speed in a given direction and speed has no direction
What is the difference between mass and weight? Mass never changes and weight does
How does your mass on Earth compare to your mass on the moon? It is the same
How does your weight on Earth compare to your weight on the moon? Your weight is lower on the moon because of zero gravity
Explain friction. How does it affect the movement of an object? It’s the rubbing on a surface that slows things down when they are in motion
How does the mass of an object affect the amount of force needed to accelerate the object? The greater the mass, the more force it takes to move it
Explain how to solve a vector diagram (to determine a net force). subtract the bigger number from the smaller number
Created by: AnnaMckenzee