Work Review

Front

What is Work in physics?

Back

Work is defined as the product of the force applied to an object and the distance over which that force is applied in the direction of the force. It is calculated using the formula W = F * d.

Front

What is Gravitational Potential Energy (GPE)?

Back

Gravitational Potential Energy is the energy an object possesses due to its position in a gravitational field, typically calculated as GPE = m * g * h, where m is mass, g is the acceleration due to gravity, and h is height.

Front

What is the relationship between Work and Energy?

Back

Work done on an object results in a change in its energy. If work is done on an object, its energy increases; if work is done by the object, its energy decreases.

Front

What is Kinetic Energy (KE)?

Back

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

Front

What is the formula for calculating Work?

Back

W = F * d, where W is work, F is the force applied, and d is the distance moved in the direction of the force.

Front

What does it mean if no work is done on an object?

Back

No work is done on an object if the object does not move, or if the force applied is perpendicular to the direction of motion.

Front

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

Back

The unit of Work is the Joule (J), which is equivalent to one Newton meter (N·m).

Front

What is the significance of a positive work value?

Back

Positive work indicates that energy is being transferred to the object, resulting in an increase in its energy.

Front

What is the significance of a negative work value?

Back

Negative work indicates that energy is being taken away from the object, resulting in a decrease in its energy.

Front

How does lifting an object relate to Work and GPE?

Back

Lifting an object requires work to be done against gravity, which increases the object's gravitational potential energy.