One stone has a mass of 16 kg and a kinetic energy of 26 J. A second stone has the same mass and nine times the kinetic energy. Compare their speeds.

Anybody wanna ? (picture included? )

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

What is the coefficient of kinetic friction μk between the block and the tabletop?