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# Motion Review

### Motion

TermDefinition
What is velocity? speed in any given direction
What is speed? measure of distance traveled per unit of time; how fast something is moving; distance divided by time.
Explain displacement. change in position from an objects 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 objects velocity or speed. - going down a hill - speeding up - going up a hill
Explain why deceleration is also acceleration. because speed is decreasing and acceleration is a rate of change in an object.
What does a flat line on a distance/time graph represent? stopped
Greater slope up means ____________ on a distance/time graph. constant speed away
Greater slope down means ____________ on a distance/time graph. constant speed
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 away from starting position
What does a downward slope on a velocity/time graph represent? slowing down, deceleration
What does constant velocity mean? an object is traveling at the same distance every second
Tell three ways velocity can change. changes direction, velocity and direction, or changes velocity
If an object’s mass increases, its acceleration will ______________. decrease
Force = _________ x ____________ 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
Net force = _______________ sum of all forces
What type of force does not cause acceleration? balance
What is magnitude? the size or quantity
What is vector? a specific amount of force and direction
Explain Newton’s First Law of Motion. a body in motion, will stay in motion a body at rest, will stay at rest
Greater mass = __________ inertia greater inertia
Explain Newton’s Second Law of Motion. when a net force acts on an object, the object will accelerate in the direction of the net force.
Explain Newton’s Third Law of Motion. for every reaction there is an equal and opposite reaction
What is inertia? resistance to change
What is another name for Newton’s First Law of Motion? Law of Inertia
What does air resistance depend upon? speed of an object and the surface
What is the formula for velocity? distance/time
What is the difference between speed and velocity? speed is how fast something is going and velocity is that and the direction
What is the difference between mass and weight? mass never changes
How does your mass on Earth compare to your mass on the moon? it is the same because mass doesn't change
How does your weight on Earth compare to your weight on the moon? it would change
Explain friction. How does it affect the movement of an object? it adds resistance
How does the mass of an object affect the amount of force needed to accelerate the object? if an object is heavier.. it will go slower if an object is lighter.... it will go faster
Explain how to solve a vector diagram (to determine a net force). you have to find the sum of the forces together
Created by: Brylee