Work

Front

What is the formula for calculating work?

Back

Work (W) = Force (F) × Distance (d) × cos(θ), where θ is the angle between the force and 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).

Front

How is work related to energy?

Back

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

Front

What is the condition for work to be done on an object?

Back

Work is done when a net force causes an object to move in the direction of the force.

Front

If a force is applied but the object does not move, is work done?

Back

No, if there is no movement, no work is done, regardless of the force applied.

Front

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

Back

Work increases with greater force or greater distance moved in the direction of the force.

Front

What is the work done when a 200 N force moves an object 0 meters?

Back

The work done is 0 Joules, since there is no movement.

Front

If a weightlifter holds a barbell still, is work being done?

Back

False, no work is done because there is no movement.

Front

Calculate the work done if a force of 50 N moves an object 3 meters.

Back

Work = 50 N × 3 m = 150 Joules.

Front

What does it mean when work is said to be positive?

Back

Positive work means that the force and the displacement are in the same direction.