What is the work done by a constant force of 10 N acting on an object that doesn't move?

What is the work done if a force of 15 N is applied at an angle of 30° to the direction of displacement of 10 meters?

Fill in the blank:

A force of 20 N is applied to an object that moves 5 meters in the direction of the force. The work done is _______.

Is this statement true or false?

In the formula for work using vectors, where θ represent angle between force and displacement vectors.

Is this statement true or false?

If the force and displacement vectors are perpendicular to each other, the angle (θ) between them is 90°.

Fill in the blank:

In the SI unit system, the unit of work is _______.

If an object is pulled horizontally with a force of 50 N and it moves a distance of 8 meters horizontally, how much work is done?

If the angle between the force and displacement vectors is 60°, how much of the force contributes to the work done?

Fill in the blank:

When the force and displacement vectors are parallel and in the same direction, then the angle (θ) between them is _______.

When does work have a negative value in the context of vectors?