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QuestionAnswer
What is velocity? Speed and direction of an object.
What is speed? How fast an object is moving.
Explain displacement. the change in position of an object.
What is distance? The amount of space between or how far something is.
Explain acceleration. Tell three ways an object can accelerate. A change in velocity or direction or a change in both.
Explain why deceleration is also acceleration. Changing speed
What does a flat line on a distance/time graph represent? indicates the object is travelling at a constant speed
Greater slope up means ____________ on a distance/time graph. Faster speed
Greater slope down means ____________ on a distance/time graph. Faster you go back to the origin
What does a flat line on a velocity/time graph represent? indicates the object is travelling at a constant speed
What does an upward slope on a velocity/time graph represent? velocity is increasing
What does a downward slope on a velocity/time graph represent? slope is negative
What does constant velocity mean? Speed and direction of an object stays the same
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 ____________ Force = Mass x Acceleration
What are unbalanced forces? forces applied to an object in opposite directions that are not equal in size
What are balanced forces? Balanced forces are equal in size and opposite in direction
Net force = _______________ sum of forces acting on a particle or body
What type of force does not cause acceleration? no acceleration occurs when the forces are balanced
What is magnitude? the great size or extent of something
What is vector? a quantity having direction as well as magnitude
Explain Newton’s First Law of Motion. if a body is at rest or moving at a constant speed in a straight line, it will remain at rest or keep moving in a straight line at constant speed unless it is acted upon by a force.
Greater mass = __________ inertia The more mass an object has, the greater its inertia
Explain Newton’s Second Law of Motion the acceleration of an object is directly related to the net force and inversely related to its mass
Explain Newton’s Third Law of Motion. in nature there is an equal and opposite reaction.
What is inertia? a property of matter by which it continues in its existing state of rest or uniform motion in a straight line, unless that state is changed by an external force.
What is another name for Newton’s First Law of Motion? the law of inertia
What does air resistance depend upon? depends on its speed
What is the formula for velocity? Speed Velocity
What is the difference between speed and velocity? Put another way, speed is a scalar value, while velocity is a vector.
What is the difference between mass and weight? mass is the amount of matter in an object
How does your mass on Earth compare to your mass on the moon? Your weight on the Moon is 16.5% what you would experience on Earth.
How does your weight on Earth compare to your weight on the moon? Your weight on the Moon is 16.5% what you would experience on Earth
Explain friction. How does it affect the movement of an object? Friction is a force that occurs when two surfaces slide past one another.
How does the mass of an object affect the amount of force needed to accelerate the object? As the force acting upon an object is increased, the acceleration of the object is increased.
Created by: scotty33
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