a car moves in a straight line at 16.0 m/s for 8.0 miles, then at 30.0 m/s for another 8.0 miles. calculate
the car's average speed in m/s.
when i did it i got 23m/s but when i check it was incorrect

30 points - when can a theory be modified if a new type of technology allows for new observations that raise new questions? a. immediately, while the questions about the theory are being asked b. after new hypotheses related to the theory are tested in experiments c. only after the new observations disprove all parts of the theory d. while scientists begin to think about how the theory could improve