Ill upvote

a roller coaster starts down a hill at 10 m/s. three seconds later, its speed is 32 m/s. what is the roller coaster’s acceleration?

question 1 options:

-7.3 m/s

-7.3 m/s2

7.3 m/s 2

7.3 m/s

This flow chart shows the amount of energy that is emitted by each type of light. ultraviolet > blue light > yellow light > red light (maximum energy) (minimum energy) in an experiment, shining which type of light on a strip of metal would be least likely to produce the photoelectric effect? ultraviolet light dim blue light bright red light bright yellow light