Askydiver jumps from an airplane and falls freely for 5 seconds. if the sky diver's velocity increases by 49 m/s during that time, at which rate is the diver accelerating ?

If the force on an object is in the negative direction, the work it does on the object must be [2 points a) negative. b) positive c) the work could be either positive or negative, depending on the direction the object moves

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

If the chemical properties of a substance remain unchanged and appearance or shape of a substance changes it is called a ?