Motion & Forces
Flashcard
•
Science
•
8th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the definition of gravitational force?
Back
Gravitational force is the attractive force between two masses, which pulls objects towards each other. On Earth, it is often referred to as weight.
2.
FLASHCARD QUESTION
Front
What is the role of magnetic force in Maglev trains?
Back
Magnetic force is used in Maglev trains to lift and propel the train along the track, allowing for frictionless movement.
3.
FLASHCARD QUESTION
Front
What is an unbalanced force?
Back
An unbalanced force occurs when two forces acting on an object are not equal in size and direction, causing the object to accelerate or change its motion.
4.
FLASHCARD QUESTION
Front
What is normal force?
Back
Normal force is the force exerted by a surface that supports the weight of an object resting on it, acting perpendicular to the surface.
5.
FLASHCARD QUESTION
Front
What is air resistance?
Back
Air resistance is a type of frictional force that opposes the motion of an object as it moves through the air, slowing it down.
6.
FLASHCARD QUESTION
Front
What is the difference between balanced and unbalanced forces?
Back
Balanced forces are equal in size and opposite in direction, resulting in no change in motion. Unbalanced forces cause an object to accelerate.
7.
FLASHCARD QUESTION
Front
What is frictional force?
Back
Frictional force is the force that opposes the relative motion of two surfaces in contact, acting parallel to the surfaces.
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