A baseball dropped from the roof of a tall building takes 4.1 seconds to hit the ground. How tall is the building?

There are two-speed cameras, one in an are where the speed limit is 30 km/h and another where the speed limit is 50 km/h. in which will there be a smaller time interval between the photographs? explain your answer.

Glass has a hardness that is in the middle of the hardness scale. what is the hardness of glass?

Frank just graduated from eighth grade. assuming exactly four years from now he will graduate from high school how many seconds does he have until his high school graduation