Kinetic & Potential Energy
What is the definition of kinetic energy?
The energy an object possesses due to its motion.
What is work?
The transfer of energy through force.
What is the definition of potential energy?
The stored energy in an object due to its position or state.
What role does the symbol theta (θ) play in the work-energy theorem?
The angle at which the force is being applied.
What is the difference between micro and macroscopic?
Microscopic: Things happening on a particle level (e.g., atoms and molecules).
Macroscopic: Things we can see visually with the naked eye.
How can you have zero work?
What happens to the potential energy when an apple falls from a tree?
The potential energy gets converted to kinetic energy, the potential energy decreases as the kinetic energy increases.
How is net work related to kinetic energy.
Net work is the change in kinetic energy.
A 0.5 kg bird is flying at a velocity of 10 m/s. What is its kinetic energy?
25 Joules
Mr. Y pushes a crate with a force of 30 N at an upward angle of 13°. He moves the crate 15 km (he's strong). How much work did he apply to the crate?
438 Joules