or

or

taken

why

Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.

Don't know
Know
remaining cards
Save
0:01
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

Normal Size     Small Size show me how

# Motion review

What is velocity? Speed in any given direction
What is speed? The measure of distance traveled per unit of time ; how fast something is moving;distance divided by time.
Explain displacement? The change in position from an objects original location.
What is distance? The amount of ground an object has covered during its motion.
Explain acceleration. Tell three ways an object can accelerate. Change in velocity, change in direction, or change in both direction and velocity.
Explain why deceleration is also acceleration. Deceleration slowing down and acceleration is a change in speed which is what is what happens when something decelerates.
What does a flat line on a distance/time graph represent? It means stopped/ not moving.
Greater slope up means ____________ on a distance/time graph. Constant speed away from starting point.
Greater slope down means ____________ on a distance/time graph. Constant speed towards starting point
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? An object is traveling at the same distance every second
Tell three ways velocity can change. It can slow down, it can speed up, or it can change direction
If an object’s mass increases, its acceleration will ______________. Decrease
Force = _________ x ____________ Mass x Acceleration
What are unbalanced forces? Unequal forces that acts on an object; forces are not equal in size and/or direction; cause a change in motion; create net force not equal to zero
What are balanced forces? Equal forces that act on a object in opposite directions; do not cause a change in motion;no net force; no acceleration; velocity remains constant
Net force = _______________ Sum of all forces acting on a object
What type of force does not cause acceleration? Balanced force
What is magnitude? The size of a force
What is vector? The direction of a force
Explain Newton’s First Law of Motion. A body in motion is likely to stay in motion, and a body at rest will stay at rest unless acted on by an unbalanced force (inertia)
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 this net force. Greatermass= Greater acceleration. Air resistance is the force of air that pushes against an object through the air. Air resistance is fluid friction
Explain Newton’s Third Law of Motion. For every force or action there is an equal and opposite reaction.
What is inertia? An objects motion will stay constant
What is another name for Newton’s First Law of Motion? Law of Inertia
What does air resistance depend upon? Size, shape, and speed.
What is the formula for velocity? Distance/time
What is the difference between speed and velocity? Velocity is speed in any direction and speed is measure of distance traveled per unit of time
What is the difference between mass and weight? Mass is how much matter is in something and weight is the amount of gravitational force on an object
How does your mass on Earth compare to your mass on the moon? Mass doesn't change because it is the amount of matter.
How does your weight on Earth compare to your weight on the moon? Your weight on the moon would be lighter on the moon because of the gravitational pull
Explain friction. How does it affect the movement of an object? It slows down the movement of the object and lowers the energy of the object
How does the mass of an object affect the amount of force needed to accelerate the object? The greater the mass the less acceleration/ the less the mass the greater the acceleration
Explain how to solve a vector diagram (to determine a net force). You add all the forces together to get the sum
Created by: ArielN