Understanding Work in Physics

What type of quantity is work in physics?

• Tensor

• Vector

• Matrix

• Scalar

Which of the following is necessary to calculate work done?

• Force and distance

• Distance and speed

• Force and time

• Speed and time

What is the unit of work in the International System of Units?

• Watt

• Joule

• Newton

• Pascal

What is the angle between force and displacement when they are parallel?

• 45 degrees

• 0 degrees

• 90 degrees

• 180 degrees

If a force is applied at an angle to the direction of displacement, how is the work calculated?

• Using the total force and displacement

• Using only the force magnitude

• Using the component of force parallel to displacement

• Using the component of force perpendicular to displacement

In the context of work, what does the cosine of the angle between force and displacement represent?

• The total displacement

• The component of force parallel to displacement

• The component of force perpendicular to displacement

• The total force

What happens to the work done if an object does not move despite a force being applied?

• Work is infinite

• No work is done

• Work is done

• Work is negative

Why does holding a book in a stationary position not constitute work in physics?

• Because the force is too small

• Because the book is not moving

• Because the force is not constant

• Because the book is heavy

What is the angle between the force of gravity and the moon's displacement as it orbits Earth?

• 0 degrees

• 45 degrees

• 90 degrees

• 180 degrees

Why does Earth's gravitational force do no work on the moon?

• Because the force is too weak

• Because the moon is not moving

• Because the force is perpendicular to the displacement

• Because the moon is too far