If your weight is 500 N, and you are standing on a floor that is 20 m above the ground, what
is the gravitational potential energy between
you and Earth, relative to the ground?

Atrain departs from its station at a constant acceleration of 5 m/s. what is the speed of the train at the end of 20s?

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

What is the angular momentum of the bar about the axle?