AP Physics 1 Unit 4 Review

Front

The total energy in an isolated system can be increased.

Back

False - The total energy in an isolated system remains constant due to the law of conservation of energy.

Front

The sum of the kinetic and potential energy in a system is known as the system's total ________ energy.

Back

Mechanical energy - It is the total energy due to motion (kinetic) and position (potential) of an object.

Front

How are work and energy related?

Back

The work done by an external force acting on an object causes a change in the mechanical energy of the object.

Front

What does negative work indicate?

Back

Negative work means that energy is being removed from the object.

Front

What is the difference between calculating power and work?

Back

Power takes into account the time it takes to complete a task.

Front

Define mechanical energy.

Back

Mechanical energy is the sum of kinetic and potential energy in a system.

Front

What is the formula for work done?

Back

Work (W) = Force (F) × Distance (d) × cos(θ), where θ is the angle between the force and the direction of motion.

Front

What is the unit of power?

Back

The unit of power is the Watt (W), which is equivalent to one Joule per second.

Front

Explain the concept of conservation of energy.

Back

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

Front

What is kinetic energy and its formula?

Back

Kinetic energy (KE) is the energy of an object in motion, calculated as KE = 1/2 mv², where m is mass and v is velocity.