Work & Energy Review

Front

What is thermal energy?

Back

Thermal energy is the energy that comes from the temperature of matter. It is not a type of mechanical energy.

Front

How do you calculate Kinetic Energy (KE)?

Back

Kinetic Energy (KE) is calculated using the formula KE = ½ mv², where m is mass and v is velocity.

Front

If two gardeners trim 15 bushes using the same force, how would you describe the work they each do?

Back

The work done by each gardener is the same, as they exert the same force over the same distance.

Front

What is the formula for the change in Kinetic Energy?

Back

The change in Kinetic Energy is given by the formula: Change in KE = ½ mv_f² - ½ mv_i².

Front

How is work defined in physics?

Back

In physics, work is defined as the product of the force exerted parallel to the direction of displacement and the distance moved.

Front

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

Back

The unit of work in the SI system is the Joule (J).

Front

What is the relationship between work and energy?

Back

Work is a transfer of energy. When work is done on an object, energy is transferred to that object.

Front

What factors affect the amount of work done?

Back

The amount of work done depends on the magnitude of the force applied and the distance over which the force is applied.

Front

What is potential energy?

Back

Potential energy is the energy stored in an object due to its position or configuration, such as gravitational potential energy.

Front

How does mass affect Kinetic Energy?

Back

Kinetic Energy is directly proportional to the mass of the object; as mass increases, Kinetic Energy increases if velocity remains constant.