Energy ACP Review

Front

What is the definition of work in physics?

Back

Work is done when a force causes an object to move. It is calculated as the product of the force and the distance moved in the direction of the force.

Front

What is the formula for calculating gravitational potential energy?

Back

Gravitational potential energy (PE) is calculated using the formula PE = mgh, where m is mass (in kg), g is the acceleration due to gravity (9.81 m/s²), and h is height (in meters).

Front

What is kinetic energy?

Back

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

Front

What is total mechanical energy?

Back

Total mechanical energy is the sum of an object's potential energy and kinetic energy.

Front

How do you calculate force when work and distance are known?

Back

Force can be calculated using the formula F = W/d, where W is work done and d is distance moved.

Front

What happens to kinetic energy at the highest point of a pendulum swing?

Back

At the highest point of a pendulum swing, kinetic energy is at its minimum (zero) because the pendulum is momentarily at rest.

Front

At which point in a pendulum's swing is potential energy at its maximum?

Back

Potential energy is at its maximum at the highest points of the swing, where the pendulum is momentarily at rest.

Front

What is the relationship between work, energy, and force?

Back

Work is a transfer of energy that occurs when a force is applied to an object and it moves. Energy is the capacity to do work.

Front

What is the unit of work in the International System of Units (SI)?

Back

The unit of work is the Joule (J). One Joule is equal to one Newton meter.

Front

How does energy conservation apply to a swinging pendulum?

Back

In a swinging pendulum, the total mechanical energy remains constant if we ignore air resistance and friction. Energy transforms between potential and kinetic forms.