Force and Motion

Flashcard
•
Physics
•
8th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is Newton's Second Law of Motion?
Back
It states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. Formula: F = ma.
2.
FLASHCARD QUESTION
Front
What is inertia?
Back
Inertia is the tendency of an object to resist changes in its state of motion. The more mass an object has, the more inertia it has.
3.
FLASHCARD QUESTION
Front
What is the formula for calculating weight?
Back
Weight (W) is calculated using the formula W = mg, where m is mass and g is the acceleration due to gravity (approximately 9.81 m/s² on Earth).
4.
FLASHCARD QUESTION
Front
What is the difference between mass and weight?
Back
Mass is the amount of matter in an object (measured in kg), while weight is the force exerted by gravity on that mass (measured in Newtons).
5.
FLASHCARD QUESTION
Front
What is a force?
Back
A force is a push or pull that is exerted on matter.
6.
FLASHCARD QUESTION
Front
What is the unit of force?
Back
The unit of force is the Newton (N).
7.
FLASHCARD QUESTION
Front
What happens when two forces of equal magnitude act in opposite directions?
Back
They cancel each other out, resulting in a net force of zero.
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