Work, Energy and Power

Front

What kind of energy is in a rock at the edge of a cliff?

Back

Potential energy is the energy stored in an object due to its position. A rock at the edge of a cliff has potential energy because of its height.

Front

What is stored energy?

Back

Stored energy is known as potential energy. It is the energy an object has due to its position or condition.

Front

At which point is kinetic energy greatest?

Back

Kinetic energy is greatest at the lowest point of an object's fall, where it has the highest speed.

Front

As a falling apple approaches the ground, what happens to its kinetic energy?

Back

As the apple falls, its kinetic energy increases because it is moving faster as it gets closer to the ground.

Front

Does using more power mean you do more work?

Back

False. Power is the rate at which work is done, not the total amount of work done.

Front

What is kinetic energy?

Back

Kinetic energy is the energy of an object in motion. It depends on the mass and speed of the object.

Front

What is the formula for calculating kinetic energy?

Back

The formula for kinetic energy (KE) is KE = 1/2 mv², where m is mass and v is velocity.

Front

What is potential energy?

Back

Potential energy is the energy stored in an object due to its position or condition, such as height or compression.

Front

What is the formula for calculating potential energy?

Back

The formula for potential energy (PE) is PE = mgh, where m is mass, g is the acceleration due to gravity, and h is height.

Front

What happens to potential energy as an object falls?

Back

As an object falls, its potential energy decreases while its kinetic energy increases.