Forces & Newton's Laws
Flashcard
•
Physics
•
8th Grade
•
Practice Problem
•
Hard
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1.
FLASHCARD QUESTION
Front
What is Newton's 1st Law of Motion?
Back
An object at rest stays at rest, and an object in motion stays in motion with the same speed and in the same direction unless acted upon by a net external force.
2.
FLASHCARD QUESTION
Front
What is Newton's 2nd Law of Motion?
Back
The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. This is often expressed as F=ma.
3.
FLASHCARD QUESTION
Front
What is Newton's 3rd Law of Motion?
Back
For every action, there is an equal and opposite reaction.
4.
FLASHCARD QUESTION
Front
What is a balanced force?
Back
A balanced force occurs when two forces acting on an object are equal in size and opposite in direction, resulting in a net force of zero.
5.
FLASHCARD QUESTION
Front
What is an unbalanced force?
Back
An unbalanced force occurs when two forces acting on an object are not equal, resulting in a net force that causes the object to accelerate.
6.
FLASHCARD QUESTION
Front
How do you calculate net force when two forces are acting in the same direction?
Back
You add the magnitudes of the two forces together.
7.
FLASHCARD QUESTION
Front
How do you calculate net force when two forces are acting in opposite directions?
Back
You subtract the smaller force from the larger force.
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