Force and motion
Flashcard
•
Science
•
8th Grade
•
Practice Problem
•
Hard
+3
Standards-aligned
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15 questions
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1.
FLASHCARD QUESTION
Front
What is Newton's Second Law of Motion?
Back
Newton's Second Law states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. It can be expressed with the formula: F = ma (Force = mass × acceleration).
Tags
NGSS.HS-PS2-1
2.
FLASHCARD QUESTION
Front
What is an example of negative acceleration?
Back
A runner slowing to a walk after crossing the finish line is an example of negative acceleration.
3.
FLASHCARD QUESTION
Front
What is the difference between action and reaction forces?
Back
Action and reaction forces are equal in magnitude and opposite in direction, as stated in Newton's Third Law of Motion.
Tags
NGSS.MS-PS2-1
4.
FLASHCARD QUESTION
Front
What is acceleration?
Back
Acceleration is the rate of change of velocity of an object. It can occur due to an increase or decrease in speed or a change in direction.
Tags
NGSS.MS-PS2-2
5.
FLASHCARD QUESTION
Front
What does it mean for an object to be in motion?
Back
An object is in motion if its position changes relative to a reference point over time.
Tags
NGSS.MS-PS3-1
6.
FLASHCARD QUESTION
Front
What is inertia?
Back
Inertia is the tendency of an object to resist changes in its state of motion. An object at rest stays at rest, and an object in motion stays in motion unless acted upon by a net external force.
7.
FLASHCARD QUESTION
Front
What is an example of Newton's Third Law of Motion?
Back
A rocket traveling forward in space with an equal and opposite force as the jet propulsion shooting backwards is an example of Newton's Third Law.
Tags
NGSS.MS-PS2-1
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