E-3 Flashcard

Front

What is kinetic energy?

Back

Kinetic energy is the energy that an object possesses due to its motion, calculated as KE = 1/2 mv², where m is mass and v is velocity.

Front

What is thermal energy?

Back

Thermal energy is the internal energy present in a system due to the random motions of its particles, often associated with heat.

Front

What is potential energy?

Back

Potential energy is the energy stored in an object due to its position or configuration, such as gravitational potential energy.

Front

What is friction?

Back

Friction is the resistance that one surface or object encounters when moving over another, often converting kinetic energy into thermal energy.

Front

What is velocity?

Back

Velocity is a vector quantity that refers to the rate at which an object changes its position, including both speed and direction.

Front

What is a vector?

Back

A vector is a quantity that has both magnitude and direction, such as velocity and force.

Front

What happens to an object's speed in the absence of friction?

Back

In the absence of friction, an object's speed will remain constant if no external forces act on it.

Front

What is the relationship between kinetic energy and speed?

Back

Kinetic energy increases with the square of the speed; if speed doubles, kinetic energy increases by a factor of four.

Front

What is the principle of conservation of energy?

Back

The principle of conservation of energy states that energy cannot be created or destroyed, only transformed from one form to another.

Front

What is constant speed?

Back

Constant speed means that an object covers equal distances in equal intervals of time, without acceleration.