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 an object has when it is at rest and has the potential to move.

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 the speed at which it is moving.

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 does an object have the greatest potential energy on a ramp?

Back

An object has the greatest potential energy at the highest point on the ramp.

Front

What happens to potential energy as an object falls?

Back

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

Front

What is the relationship between potential and kinetic energy?

Back

Potential energy can be converted into kinetic energy and vice versa. For example, when an object falls, its potential energy is converted into kinetic energy.

Front

What is the formula for kinetic energy?

Back

The formula for kinetic energy (KE) is: KE = 0.5 × mass (kg) × velocity² (m/s)².

Front

If two objects have the same mass but different speeds, how do their kinetic energies compare?

Back

The object with the higher speed will have greater kinetic energy, as kinetic energy depends on the square of the velocity.

Front

What is an example of an object with high potential energy?

Back

A book placed on a high shelf has high potential energy due to its elevated position.

Front

What is an example of an object with high kinetic energy?

Back

A moving car has high kinetic energy due to its mass and speed.