Motion and Forces
Flashcard
•
Science
•
7th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is velocity?
Back
Velocity is the speed of an object in a specific direction. For example, a car traveling at 35 mph north has a velocity of 35 mph north.
2.
FLASHCARD QUESTION
Front
What is the difference between speed and velocity?
Back
Speed is a scalar quantity that refers to how fast an object is moving, while velocity is a vector quantity that includes both speed and direction.
3.
FLASHCARD QUESTION
Front
What is an unbalanced force?
Back
An unbalanced force is a force that causes an object to change its motion. It occurs when the total forces acting on an object are not equal.
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 but opposite in direction, resulting in no change in motion.
5.
FLASHCARD QUESTION
Front
What is friction?
Back
Friction is a force that opposes the motion of an object when two surfaces rub against each other. It causes objects to slow down or stop.
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 force.
7.
FLASHCARD QUESTION
Front
What is acceleration?
Back
Acceleration is the rate at which an object changes its velocity. It can be a change in speed or direction.
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