Category 2 Retest
Flashcard
•
Science
•
8th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is kinetic energy?
Back
Kinetic energy is the energy an object possesses due to its motion. It is calculated using the formula KE = 1/2 mv², where m is mass and v is velocity.
2.
FLASHCARD QUESTION
Front
At which point in a pendulum's swing is kinetic energy highest?
Back
Kinetic energy is highest at the lowest point of the swing.
3.
FLASHCARD QUESTION
Front
What is potential energy?
Back
Potential energy is the stored energy in an object due to its position or state. For example, an object at a height has gravitational potential energy.
4.
FLASHCARD QUESTION
Front
When does a yo-yo have the most potential energy?
Back
A yo-yo has the most potential energy when it is at its highest point.
5.
FLASHCARD QUESTION
Front
What is the formula to calculate force?
Back
Force is calculated using the formula F = ma, where F is force, m is mass, and a is acceleration.
6.
FLASHCARD QUESTION
Front
How much force is needed to accelerate a 25kg bowling ball at 2m/s²?
Back
50N (calculated using F = ma: 25kg * 2m/s² = 50N).
7.
FLASHCARD QUESTION
Front
What is net force?
Back
Net force is the total force acting on an object after all the forces are combined. It determines the object's acceleration.
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