S8P2.a and b Potential and Kinetic energy

Front

What is potential energy?

Back

Potential energy is the energy stored in an object due to its position or configuration, often related to its height above the ground.

Front

How does lifting an object affect its potential energy?

Back

Lifting an object increases its height, which increases its potential energy.

Front

What is kinetic energy?

Back

Kinetic energy is the energy of an object in motion, dependent on its mass and speed.

Front

How is kinetic energy calculated?

Back

Kinetic energy (KE) is calculated using the formula KE = 1/2 mv², where m is mass and v is velocity.

Front

What happens to kinetic energy as an object speeds up?

Back

As an object speeds up, its kinetic energy increases.

Front

In a roller coaster, where is the potential energy the greatest?

Back

The potential energy is greatest at the highest points of the roller coaster.

Front

In a roller coaster, where is the kinetic energy the greatest?

Back

The kinetic energy is greatest at the lowest points of the roller coaster.

Front

What is the relationship between potential energy and kinetic energy in a closed system?

Back

In a closed system, the total mechanical energy (potential + kinetic) remains constant, meaning energy can transform from one form to another.

Front

How does mass affect kinetic energy?

Back

Kinetic energy is directly proportional to mass; if mass increases, kinetic energy increases if speed remains constant.

Front

How does speed affect kinetic energy?

Back

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