Why are concerns like safety and recycling important in astronomy, even though the research is often not conducted in a traditional lab?

An object thrown vertically upward from the surface of a celestial body at a velocity of 36 m/s reaches a height of sequalsminus0.9tsquaredplus36t meters in t seconds. a. determine the velocity v of the object after t seconds. b. when does the object reach its highest point? c. what is the height of the object at the highest point? d. when does the object strike the ground? e. with what velocity does the object strike the ground? f. on what intervals is the speed increasing?

Select the word from the list that best fits the definition classification of most stars on the h-r diagram

How are calculation for velocity and speed different