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# motion

### motion review

What is velocity? the speed of something in a given direction
What is speed? distance traveled per unit of time
Explain displacement. the moving of something from its original position
What is distance? how much ground an object has traveled from its original position
Explain acceleration. Tell three ways an object can accelerate. the rate of change of velocity of an object
Explain why deceleration is also acceleration. because it's still a change in speed or direction
What does a flat line on a distance/time graph represent? stopped
Greater slope up means ____________ on a distance/time graph. constant speed away from starting position
Greater slope down means ____________ on a distance/time graph. constant speed towards starting position
What does a flat line on a velocity/time graph represent? it means cosntant speed
What does an upward slope on a velocity/time graph represent? accelerating away from the starting point
What does a downward slope on a velocity/time graph represent? it means deceleration or negative acceleration
What does constant velocity mean? its traveling at the same distance every second
Tell three ways velocity can change. slow down, speed up, or change direction
If an object’s mass increases, its acceleration will ______________. decrease
Force = _________ x ____________ mass, 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
What type of force does not cause acceleration? balanced force
What is magnitude? size of an object
What is vector? has a size and quantity
Explain Newton’s First Law of Motion. that an object in motion will stay in motion unless an unbalanced force acts upon it. and a body at rest will stay at rest unless an unbalanced force acts upon it.
Greater mass = __________ inertia greater
Explain Newton’s Second Law of Motion. that when a net force acts upon an object it will move in the direction of the net force
Explain Newton’s Third Law of Motion. that every force and action has an opposite reaction
What is inertia? property of matter that stays in rest or motion
What is another name for Newton’s First Law of Motion? law of inertia
What does air resistance depend upon? the speed of an abject and its surface area
What is the formula for velocity? distance divided by time; distance/time
What is the difference between speed and velocity? velocity is speed in a given direction while speed is the distance traveled per unit of time
What is the difference between mass and weight? mass is the measure of how much matter is in an object ehile weight is the measure of gravity on an object
How does your mass on Earth compare to your mass on the moon? there is no difference because mass stays the same
How does your weight on Earth compare to your weight on the moon? your weight on the moon would be lighter because there is less gravity
Explain friction. How does it affect the movement of an object? the resistance between two objects. and it slows them down
How does the mass of an object affect the amount of force needed to accelerate the object? the greater the mass the more force is needed to act upon it
Explain how to solve a vector diagram (to determine a net force). a vector is a force so two vectors working against eachother may cancell one another out
Created by: allison.g21