
Final, Pt 2 of 2
Flashcard
•
Physics
•
11th Grade
•
Practice Problem
•
Hard
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1.
FLASHCARD QUESTION
Front
What happens to the momentum of an object when its speed is doubled?
Back
The momentum doubles.
2.
FLASHCARD QUESTION
Front
A swimmer with a mass of 75kg dives off a raft with a mass of 500kg. If the swimmer's speed is 4m/s immediately after leaving the raft, what is the speed of the raft?
Back
0.6 m/s
3.
FLASHCARD QUESTION
Front
What does the law of conservation of energy state?
Back
Energy CANNOT be created or destroyed, only transformed.
4.
FLASHCARD QUESTION
Front
Which bowling ball has LESS kinetic energy: one moving at 8 m/s or one at 10 m/s?
Back
The bowling ball moving at 8 m/s has less kinetic energy.
5.
FLASHCARD QUESTION
Front
At which point in a pendulum's swing is kinetic energy highest?
Back
At point 3.
6.
FLASHCARD QUESTION
Front
Define momentum in physics.
Back
Momentum is the product of an object's mass and its velocity.
7.
FLASHCARD QUESTION
Front
What is the formula for calculating kinetic energy?
Back
Kinetic Energy (KE) = 1/2 mv², where m is mass and v is velocity.
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