How much work does an elephant do while moving a circus wagon 20 meters with a pulling force of 200n

Given:

s(distance)= 20 meters

F(force)=200N

Now we know that

work done= Force applied x distance

Substituting the given values in the above formula we get

Work done= 20 x 200= 4000J

the body's situation won't change the forces are equal opposit and on the same body

frequency or wavelenth of em radiation in a vacuum