AP Physics C: Unit 3 Practice MC (Shortened)
Flashcard
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Physics
•
12th Grade
•
Practice Problem
•
Hard
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1.
FLASHCARD QUESTION
Front
What is the formula for calculating average power?
Back
Average power (P) is calculated using the formula: P = \frac{W}{t}, where W is work done and t is time.
2.
FLASHCARD QUESTION
Front
Define work done by a force at an angle.
Back
Work done (W) by a force (F) at an angle (θ) is given by: W = Fd \cos(θ), where d is the distance moved in the direction of the force.
3.
FLASHCARD QUESTION
Front
What is the relationship between kinetic energy and speed?
Back
Kinetic energy (KE) is given by the formula: KE = \frac{1}{2}mv^2, where m is mass and v is speed.
4.
FLASHCARD QUESTION
Front
How does potential energy change with height?
Back
Potential energy (U) increases with height (h) and is given by: U = mgh, where m is mass, g is acceleration due to gravity, and h is height.
5.
FLASHCARD QUESTION
Front
What is the principle of conservation of mechanical energy?
Back
The principle states that in the absence of non-conservative forces, the total mechanical energy (kinetic + potential) of an object remains constant.
6.
FLASHCARD QUESTION
Front
How do you calculate the speed of a pendulum at its lowest point?
Back
At the lowest point, the speed (v) can be calculated using energy conservation: mgh = \frac{1}{2}mv^2, leading to v = \sqrt{2gh}.
7.
FLASHCARD QUESTION
Front
What is the coefficient of friction?
Back
The coefficient of friction (μ) is a dimensionless scalar value that represents the frictional force between two bodies in contact.
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