The energy of an isolated system moving in a straight-line along the x-axis is given by the following equation: E=( 2 kg) Vx^2 -(8 J/m)x. What is the magnitude of the acceleration of this system (in m/s2)?

When you drop a pebble from height a it reaches the ground with speed v if there is no air resistance. from what height should you drop it so it will reach the ground with three times the speed? (a) 9m (b) 3m (c) 6m (d) 18m

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

In a series circuit the __ is the same at every point