What does it mean when work is positive? velocity is greater than kinetic energy kentic energy is greater than velocity the environment did work on an object an object did work on the environment

Option (c) is the correct answer.

Explanation:

It is known that work is equal to negative of pressure times delta V.

Mathematically,      W = -

                                    = -

where                  P = pressure

  = change in volume

So, when work is positive then it means is negative.

                           W = -

                               = -

                               = +ve

Thus, we can conclude that when work is positive then work is done on the system or object by the environment.

wavelength divides in half and speed stays the same.