Question

Work is a _____________; a + or - sign on a work value indicates information about __________.a. vector; b. whether the work adds or removes energy from the object vector, c. the direction of the work vector scalar; d. the direction of the work vector scalar; e. whether the work adds or removes energy from the object

Answer 1

Answer:

The answer is: e. scalar; whether the work adds or removes energy from the object

Explanation:

The work can be calculated with the following formula:

 W = Fs

As you can see from the formula, work is a scalar product made up of two vectors, force (F)  and displacement (s), therefore work can be said to be a scalar quantity.

Answer 2

Work is a scalar; a + or - sign on a work value indicates information about the direction of the work vector scalar

Answer: Option D

Explanation:

The measure of work done (W) on an objects by a given force can be determined to utilize the equation,

                                $W = F \times d \times \cos \theta$

Where, F represents the force and d is the separation over which the force demonstrations and theta is the point among F and d. Recognize that the angle remembered for the condition isn't only any old angles; it has a particular definition that must be recalled when taking care of such problematic.  Work is a scalar quantity not a vector quantity. It does not depend on the direction as a vector depends.