The distance a body falls from rest varies directly as the square of the time the body is falling. if a body falls 81 ft. in 3 seconds, how far will it fall in 7 seconds?

One astronomical unit (1 au) is about 1.496 alt tag missing. kilometers. if you wrote this number of kilometers in regular decimal notation (for example, 528 and 3,459 are written in regular decimal notation), how many zeros would your number have?