Forces and Energy Review
Flashcard
•
Science
•
8th Grade
•
Hard
Wayground Content
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15 questions
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1.
FLASHCARD QUESTION
Front
What is an independent variable?
Back
An independent variable is a factor that is changed or controlled in a scientific experiment to test its effects on the dependent variable.
2.
FLASHCARD QUESTION
Front
What is kinetic energy?
Back
Kinetic energy is the energy that an object possesses due to its motion, calculated using the formula KE = 1/2 mv², where m is mass and v is velocity.
3.
FLASHCARD QUESTION
Front
How do you calculate average speed?
Back
Average speed is calculated by dividing the total distance traveled by the total time taken, using the formula: Average Speed = Total Distance / Total Time.
4.
FLASHCARD QUESTION
Front
What is displacement?
Back
Displacement is the shortest distance from the initial to the final position of an object, taking into account the direction.
5.
FLASHCARD QUESTION
Front
What is the formula for kinetic energy?
Back
The formula for kinetic energy is KE = 1/2 mv², where m is mass and v is velocity.
6.
FLASHCARD QUESTION
Front
What happens to kinetic energy if the speed of an object doubles?
Back
If the speed of an object doubles, its kinetic energy increases by a factor of four, since KE is proportional to the square of the velocity.
7.
FLASHCARD QUESTION
Front
What is the relationship between height and potential energy?
Back
Potential energy increases with height; the higher an object is, the more potential energy it has, calculated using PE = mgh, where m is mass, g is acceleration due to gravity, and h is height.
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