Work or Not Work

Front

What is the definition of work in physics?

Back

Work is done when a force causes an object to move in the direction of the force. It is calculated as the product of the force and the distance moved in that direction.

Front

Is carrying groceries into the house considered work?

Back

No, it is not considered work because the groceries are not being moved in the direction of the force applied (upward force against gravity).

Front

What is an example of work being done?

Back

Throwing a baseball a distance of 20 meters is an example of work being done because the ball is moved in the direction of the force applied.

Front

What is the formula for calculating work?

Back

Work = Force x Distance x cos(θ), where θ is the angle between the force and the direction of motion.

Front

When is work not done, even if a force is applied?

Back

Work is not done if there is no movement in the direction of the force, such as holding a heavy object still.

Front

What is the unit of measurement for work?

Back

The unit of measurement for work is the Joule (J).

Front

If a man pulls his boat out of the water, is this work?

Back

Yes, this is considered work because the boat is being moved in the direction of the force applied.

Front

What does it mean when we say 'not work' in a physics context?

Back

'Not work' means that despite a force being applied, there is no movement in the direction of that force.

Front

Can you give an example of a situation where work is done?

Back

An example of work being done is pushing a shopping cart across a parking lot.

Front

What happens to the work done if the distance is zero?

Back

If the distance is zero, then no work is done, regardless of the force applied.