Work and Energy Flashcard

Front

What two quantities does 'work' depend on?

Back

Force and distance.

Front

What two conditions must be met for work to be done?

Back

The object must move and must move in the direction of the force applied.

Front

What is the formula to calculate work done when a force is applied over a distance?

Back

Work done = Force × Distance.

Front

How much work is done against gravity if a climber weighing 660 N climbs to the top of a 20 m cliff?

Back

13,200 J.

Front

What does the equation FΔt = pf − pi represent?

Back

Impulse-momentum theorem.

Front

Define 'work' in the context of physics.

Back

Work is defined as the energy transferred to or from an object via the application of force along a displacement.

Front

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

Back

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 is kinetic energy and how is it calculated?

Back

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

Front

What is potential energy and how is it calculated?

Back

Potential energy is the stored energy of an object due to its position, calculated as PE = mgh, where m is mass, g is acceleration due to gravity, and h is height.