Which of the following is an expressipn of velocity?
O
A. 55 mi north
O B. 55 mph
O C. 90 km
O
D. 90 km/h north

How would doubling the made of an object change the objects potential energy

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

Which best represents the law of conservation of mass ?