A 1500 Kg car is stalled on the railroad tracks and is hit by a 25,000 kg train, the car and the train move forward together after the collision at 25 m/s. The engineer said he was travelling at under 30m/s. Was he telling the truth? The speed of the train before the collision was m/s​

Which career professionals are part of the architecture and construction career cluster? check all that apply. a. civil engineers b. carpenters c. landscapers d. plumbers e. surveyors f. civil drafters

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

The particles that are found in the nucleus of an atom are