contestada

5.
A constant force of 15 N in the negative y direction acts on a particle as it moves from the origin
to the point (3î +31 - 1k) m. How much work is done by the given force during this
displacement?
+45 J a.
-45 J b.
+30 J C.
-30 J d.
+75 J e.​

Respuesta :

aldoxx
+45 j a
Explanation:

The work done by the given force should be -45 joules

Calculation of the work done:

Since force acts in the negative y direction

So,

F = -15j

here the displacement vector is d = 3i+3j-1k

Now

work done is W = dot product of force and displacement

                        = [-15j ] . [ 3i+3j-1k]

                        =-45 joules

Therefore, The work done by the given force should be -45 joules

Learn more about force here:

https://brainly.com/question/93252

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