All Flashcards
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 happens to kinetic energy if an object is at rest?
Kinetic energy is zero.
What happens to the kinetic energy of an object if its velocity is negative?
The kinetic energy remains positive because velocity is squared in the formula.
What happens to the kinetic energy as work is done on an object?
The kinetic energy changes by the amount of work done (Work-Energy Theorem).
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.