QUEEZ REVIEW

Front

What is Mechanical Advantage?

Back

The factor by which a simple machine makes doing work feel easier.

Front

What is the formula for calculating Gravitational Potential Energy (GPE)?

Back

GPE = mass (kg) × gravitational acceleration (9.81 m/s²) × height (m)

Front

What is Potential Energy?

Back

Stored energy that has the potential to do work.

Front

Is walking up a flight of stairs considered doing work?

Back

Yes, because work is done when a force is applied to move an object over a distance.

Front

What is the unit of energy?

Back

Joule (J)

Front

What happens to total energy in a closed system?

Back

Total energy remains constant; it can change forms but is not lost.

Front

At which point on a roller coaster is potential energy highest?

Back

At the highest point of the coaster.

Front

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

Back

As potential energy decreases, kinetic energy increases, and vice versa.

Front

What is Efficiency in the context of machines?

Back

The ratio of useful work output to total work input, expressed as a percentage.

Front

What is Input Force?

Back

The force applied to a machine to perform work.