AP Physics Unit 4: Energy

Front

What is the formula for calculating the potential energy stored in a spring?

Back

Potential Energy (PE) = 1/2 * k * x^2, where k is the spring constant and x is the compression/stretch distance.

Front

What does the area under a force versus position graph represent?

Back

The area under the curve represents Work.

Front

What is kinetic energy?

Back

Kinetic energy is the energy of an object in motion, given by the formula KE = 1/2 * m * v^2, where m is mass and v is velocity.

Front

What is gravitational potential energy?

Back

Gravitational potential energy is the energy stored in an object due to its height above the ground, calculated as PE = m * g * h, where m is mass, g is acceleration due to gravity, and h is height.

Front

How does power relate to work and time?

Back

Power (P) is the rate at which work (W) is done over time (T), given by the formula P = W/T.

Front

If a force does six times as much work in half the time, how does the power change?

Back

The power produced will be 12P.

Front

At which point in a swing does a mass have the most gravitational potential energy?

Back

The mass has the most potential energy at point A, the highest point.

Front

What is the relationship between kinetic energy and motion?

Back

An object that has kinetic energy must be moving.

Front

What is the principle of conservation of energy?

Back

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

Front

What is the unit of energy in the International System of Units (SI)?

Back

The unit of energy is the Joule (J).