6.8A Potential and Kinetic Energy

Front

What is potential energy?

Back

Potential energy is the energy stored in an object due to its position or state. It is the energy that has the potential to be converted into kinetic energy.

Front

What is kinetic energy?

Back

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

Front

How is gravitational potential energy calculated?

Back

Gravitational potential energy (GPE) is calculated using the formula: GPE = mass (kg) × gravitational acceleration (9.8 m/s²) × height (m).

Front

At which point in a pendulum's swing is potential energy the highest?

Back

Potential energy is highest at the highest points of the swing, where the pendulum momentarily stops before changing direction.

Front

What happens to potential energy as an object falls?

Back

As an object falls, its potential energy decreases while its kinetic energy increases, assuming no energy is lost to air resistance.

Front

When does a cyclist have the most kinetic energy?

Back

A cyclist has the most kinetic energy when they are moving at their highest speed, typically at the lowest point of a hill.

Front

What is the relationship between potential and kinetic energy in a roller coaster?

Back

In a roller coaster, potential energy is highest at the top of the hills, and kinetic energy is highest at the lowest points of the track.

Front

What is the effect of height on gravitational potential energy?

Back

Gravitational potential energy increases with height; the higher an object is, the more potential energy it has.

Front

How does speed affect kinetic energy?

Back

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

Front

What is the law of conservation of energy?

Back

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