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Compare kinetic energy and potential energy.
Kinetic Energy: Energy of motion | Potential Energy: Stored energy due to position or configuration.
Compare scalar and vector quantities.
Scalar: Magnitude only (e.g., kinetic energy) | Vector: Magnitude and direction (e.g., velocity).
Compare the effect of mass and velocity on kinetic energy.
Mass: Kinetic energy is directly proportional to mass. | Velocity: Kinetic energy is proportional to the square of velocity.
What is the effect of doubling the mass on kinetic energy?
Kinetic energy doubles.
What is the effect of doubling the velocity on kinetic energy?
Kinetic energy quadruples.
What is the effect of a negative velocity on kinetic energy?
Kinetic energy is always positive because velocity is squared.
What happens to the kinetic energy of an object if it comes to a complete stop?
The kinetic energy becomes zero.
What effect does friction have on kinetic energy?
Friction converts kinetic energy into thermal energy, reducing the object's kinetic energy and eventually bringing it to rest.
Differentiate between scalar and vector quantities.
Scalar: Magnitude only (e.g., kinetic energy). Vector: Magnitude and direction (e.g., velocity).
How does kinetic energy differ when observed from different frames of reference?
Kinetic energy depends on the observer's frame of reference, as velocity changes with the observer's motion.
Compare the effect of doubling mass versus doubling velocity on kinetic energy.
Doubling mass doubles KE. Doubling velocity quadruples KE.