Calculate the work done on an object moving at 6.0 m/s when a force of 12.0 N is applied for 5.0 s to an object moving over a distance of 4.0 m.

And a) oxygen i believe

The internal energy of the system we can term it as total potential energy and kinetic energy. energy flows out of the surrounding from the system then we can say that the internal energy of the final state is lower than its initials. the sign of  δesystem is negative.δesystem = efinal - einitial=-ve  efinal  ∠einitial.

If ur asking if they question is true or false ur answer would be true