Transfer of Energy

Front

What is mechanical energy?

Back

Mechanical energy is the sum of potential energy and kinetic energy in an object. It is the energy associated with the motion and position of an object.

Front

What is potential energy?

Back

Potential energy is the stored energy in an object due to its position or state. For example, a ball held at a height has gravitational potential energy.

Front

What is kinetic energy?

Back

Kinetic energy is the energy of an object in motion. It depends on the mass of the object and the speed at which it is moving.

Front

How does a machine make work easier?

Back

A machine can make work easier by changing the direction of the force, increasing the amount of force, or reducing friction.

Front

What is the relationship between potential energy and height?

Back

Potential energy increases with height. The higher an object is, the more potential energy it has due to gravity.

Front

What is 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 kinetic energy?

Back

The formula for kinetic energy (KE) is KE = 1/2 mv², where m is the mass and v is the velocity of the object.

Front

What is the principle of energy conversion?

Back

Energy conversion is the process of changing energy from one form to another, such as potential energy converting to kinetic energy when an object falls.

Front

What is friction?

Back

Friction is a force that opposes the motion of an object. It can reduce the efficiency of machines and the amount of work done.

Front

What is gravitational energy?

Back

Gravitational energy is a form of potential energy that depends on an object's height and mass in a gravitational field.