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PreAP Physics Unit 1

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Section 1

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What's the difference between independent and dependent variables?

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Physics

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Date created

Mar 1, 2020

Cards (10)

Section 1

(10 cards)

What's the difference between independent and dependent variables?

Front

The two main variables in an experiment are the independent and dependent variable. An independent variable is the variable that is changed or controlled in a scientific experiment to test the effects on the dependent variable. A dependent variable is the variable being tested and measured in a scientific experiment.

Back

What's the difference between Speed and Velocity?

Front

Velocity is the speed with a direction, while speed does not have a direction. Speed is a scalar quantity—it is the magnitude of the velocity. Speed is measured in units of distance divided by time (e.g., miles per hour, feet per second, meters per second, etc.).

Back

Inertia is an object's....

Front

Inertia is the resistance of any physical object to any change in its velocity. This includes changes to the object's speed, or direction of motion. An aspect of this property is the tendency of objects to keep moving in a straight line at a constant speed, when no forces act upon them.

Back

What does a scalar consist of?

Front

A scalar or scalar quantity in physics is a physical quantity that can be described by a single element of a number field such as a real number, often accompanied by units of measurement. A scalar is usually said to be a physical quantity that only has magnitude and no other characteristics.

Back

What does a vector consist of?

Front

Vectors are arrows consisting of a magnitude and a direction. They are used in physics to represent physical quantities that also have both magnitude and direction.

Back

How do we draw vectors?

Front

Vector force is represented by a line with an arrow at the end- length of the line indicates the magnitude and the arrow indicates the direction of that force.

Back

State Newton's 1st Law!

Front

An object at rest remains at rest, and an object in motion remains in motion at constant speed and in a straight line unless acted on by an unbalanced force.

Back

What's the difference between direct and inverse relationships?

Front

The relationship between two variables is a direct relationship if when one increases so does the other or as one decreases so does the other. ... The relationship between two variables is an inverse relationship if when one increases the other decreases or as one decreases the other increases.

Back

What's another way to say Net Force?

Front

Magnitude

Back

If forces are balanced, what is the net force?

Front

Forces that are equal in size but opposite in direction are called balanced forces. Balanced forces do not cause a change in motion. When balanced forces act on an object at rest, the object will not move.

Back