Bill kicks a rock off the top of his apartment building. it strikes a window across the street 16 m away. the acceleration of gravity is 9.8 m/s 2 . if the window is 18 m below the position where bill contacted the rock, how long was it in the air

4. who was the first one to measure the speed of light and conclude that it is finite? 5. who was the first philosopher who thought the speed of light is finite? 13. what is the speed of light numerically? 14. give an example of something moving faster than light 15. give an example for some particles or waves that

Consider a system to be two train cars traveling toward each other. what is the total momentum of the system before the train cars collide?   kg • what must the total momentum of the system be after the train cars collide?   kg •  

Select the three ways that the parallel-plate capacitor differs from a car battery.