Psychical Science: Unit 1 Review

Define work in terms of force and displacement

Work is done when a force acts upon an object and causes its displacement in the same direction as the force applied

What is the formula for calculating work?

The formula for calculating work is Work=force×distance

Explain why pushing on a wall does not constitute work being done.

Pushing on a wall does not constitute work being done because the wall does not move, so there is no displacement in the direction of the force.

What unit is work measured in?

Work is measured in joules.

Describe the relationship between force, movement, and direction for work to occur.

For work to occur, the force applied must cause movement of the object, and both the force and movement must be in the same direction.

How is power related to work and time?

Power is the rate at which work is done, meaning it is the amount of work done per unit of time.

What is required for an object to do work against an opposing force?

An object must cause movement against an opposing force for work to be done.

Explain how increasing power affects the amount of work done in a given time

Increasing power allows more work to be done in a given amount of time.