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Motion Review

What is velocity? The speed of something in a given direction
What is speed? Distance traveled per unit of time
What is displacement? The change in position from an original location
What is distance? The amount of ground an object has covered during its motion.
What is acceleration. And explain all three ways an object can accelerate Acceleration is the rate of change in an objects velocity or speed. Three ways an object can accelerate is speeding up, slowing down, or changing direction.
Explain why deceleration is also acceleration. Deceleration is acceleration too. This is both deceleration and acceleration both ave an affect on the objects rate of speed.
What does a flat line on a distance/time graph represent? It means stopped.
Greater slope up means ____________ on a distance/time graph. fast steady speed
Greater slope down means ____________ on a distance/time graph. returning to stop
What does a flat line on a velocity/time graph represent? steady 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? It means moving in a straight line at a constant speed
Tell three ways velocity can change. It can slow down speed up up or change direction
If an object’s mass increases, its acceleration will ______________. Increase
Force = _________ x ____________ mass multiplies by acceleration
What are unbalanced forces? Forces that act on an object unequal. Not equal in size an/or direction
Net force = _______________ The sum of all objects acting on an object
What type of force does not cause acceleration? Inertia
What is magnitude? The size of something
What is vector? Direction of something
Explain Newton’s First Law of Motion. A body in motion will most likely stay in motion
Greater mass = __________ inertia greater inertia
Explain Newton’s Second Law of Motion When a net force acts on an object, the object will accelerate
Explain Newton’s Third Law of Motion. For every force or action, there is an equal and opposite reaction.
What is inertia? It means an objects motion will stay constant
What is another name for Newton’s First Law of Motion? The law of inertia
What does air resistance depend upon? Depends on the objects properties
What is the formula for velocity Distance divided by time
What is the difference between speed and velocity? Velocity is speed given in a certain direction while speed is the measure of distance traveled per unit of time.
What is the difference between mass and weight? Mass is the amount of matter in an object while weight is the force gravity has upon you
How does your mass on Earth compare to your mass on the moon? the mass on the moon is different because the moon has a weaker gravitational pull
Explain friction. How does it affect the movement of an object? Friction is the resistance of something depending on the surface it's being dragged upon and either slows it down or speeds it up
How does the mass of an object affect the amount of force needed to accelerate the object? The more mass there is the greater the force of gravity will act upon it ( pull it down )
Explain how to solve a vector diagram (to determine a net force). You must look at the ways the line moves
What are balanced forces? A force that acts upon an object in an equal force. Do not cause a change in motion.
Created by: ChrisY1