The knietic energy of a ball with a mass of 0.5 kg and a velocity of 10 m/s is

The percent efficiency of a machine can never be 100% (or greater), because in the real world some energy is always converted into a. heat b. work c. input force d. output force

Which of the following is not a characteristic of s waves? a. travel slower than p waves. b. cannot be detected in locations more than 105° from an earthquake’s epicenter. c. travel through solids and liquids. d. only affect coastal regions.

If an athlete runs once around a track, back to the starting line, her average velocity is zero. true or false?