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Work in Physics Quiz

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Questions and Answers

What is the formula for work when the force F is constant and the angle θ between the force and the displacement s is also constant?

$W = |F||s|\cos(\theta)$ (correct)

$W = |F| - |s| - \theta$

$W = |F| + |s| + \theta$

$W = |F||s|\sin(\theta)$

When does a force do negative work?

When it is applied to an object

When it has a component opposite to the direction of the displacement at the point of application of the force (correct)

When it is not aligned with the direction of motion

When it has a component in the direction of the displacement at the point of application of the force

What is the SI unit of work?

Joule (J) (correct)

Coulomb (C)

Newton (N)

Watt (W)

What does work transfer from one place to another, or one form to another?

<p>Energy (C)</p> Signup and view all the answers

What is the work done by the gravitational force on a ball as it falls towards the ground?

<p>Positive, equal to the weight of the ball multiplied by the distance to the ground (D)</p> Signup and view all the answers

Study Notes

Work and Force

The formula for work when the force F is constant and the angle θ between the force and displacement s is also constant is not specified, but it is typically W = Fscosθ.
A force does negative work when the direction of the force and the displacement are in opposite directions.

Units of Work

The SI unit of work is the joule (J), which is equivalent to a newton-meter (N·m).

Energy Transfer

Work transfers energy from one place to another or from one form to another.

Work and Gravity

The work done by the gravitational force on a ball as it falls towards the ground is typically negative, as the force of gravity is in the opposite direction to the displacement of the ball.

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Description

Test your understanding of work in physics with this quiz. Explore the relationship between force, displacement, and energy transfer, and learn how to calculate work in different scenarios.