Scientific theories are explanations for scientific phenomena that can be changed when and if new information is found to support or refute the explanation. which of the following statements provides an example of a scientific theory?
a) an object at rest will remain at rest unless acted by on an outside force
b) species evolve by passing on advantagesous opposite reaction
c) for every action there is an equal and opposite reaction
d) in a closed system, energy is neither vreated nor destroyed

To find the work done, the force exerted and distance moved are multiplied. a couch is moved twice before you are happy with its placement. the same force was used to move the couch both times. if more work is done the first time it is moved, what do you know about the distance it was moved? a) when more work was done, the couch was moved the same distance. b) when more work was done, the couch was moved less. c) when more work was done, the couch was moved further. d) when more work was done, the couch wasn't moved at all.