Ontario Grade 9 Science Class Practice Exam 2025 – Your Complete Guide to Exam Success!

Question: 1 / 400

In physics, how is work defined?

The energy lost in a system

The force applied over time

The product of force and displacement

Work in physics is defined as the product of the force applied to an object and the displacement (distance moved) of that object in the direction of the force. When a force is applied to an object and it moves, work is done. The formula for calculating work is W = F × d, where W is work, F is the force applied, and d is the distance moved.

This definition illustrates that work is dependent on both the magnitude of the force and the distance over which it acts, making it a fundamental concept in mechanics. It is important to note that for work to be done, the force must cause displacement in the same direction; if there is no movement, or if the force acts perpendicular to the direction of movement, no work is done.

Understanding work in this manner provides insight into energy transfer within physical systems, as work is a way to transfer energy from one object to another.

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The total energy of an object

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