Physical Science Semester 1 Units (2024)

Front

What is kinetic energy?

Back

Kinetic energy is the energy an object possesses due to its motion. It is calculated using the formula KE = 1/2 mv², where m is mass and v is velocity.

Front

What is potential energy?

Back

Potential energy is the stored energy in an object due to its position or state. For example, a bow drawn back has potential energy due to its position.

Front

What is the formula for calculating kinetic energy?

Back

KE = 1/2 mv², where KE is kinetic energy, m is mass, and v is velocity.

Front

What is amplitude in wave physics?

Back

Amplitude is the maximum extent of a wave's oscillation, measured from the rest position to the crest or trough.

Front

What is the force of friction?

Back

The force of friction is a resisting force that opposes the motion of an object sliding or rolling over a surface.

Front

What happens to kinetic energy when the speed of an object doubles?

Back

If the speed of an object doubles, its kinetic energy increases by a factor of four, since KE is proportional to the square of the velocity.

Front

What is the relationship between mass and kinetic energy?

Back

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

Front

What is the difference between potential and kinetic energy?

Back

Potential energy is stored energy based on position, while kinetic energy is energy of motion.

Front

What is an example of gravitational potential energy?

Back

An example of gravitational potential energy is a book placed on a shelf; it has potential energy due to its height above the ground.

Front

What is the normal force?

Back

The normal force is the support force exerted upon an object that is in contact with a stable surface, acting perpendicular to the surface.