\fAn object dropped from the top of a tall building falls 3,: = 4. gig meters in the rst tseconds. What is the object's instantaneous speed at a'= 4 seconds? {1 point) 0 4.9 ma's O 9.3 ma's C! 19.5 rm's p, 39.2 rm's 0 ?3.4 ms \fConsider an object dropped on Mercury. In the following table. the distances the object falls during the rst 4 seconds are shown. --\"II mum Which of the following best represents an estimate of the objects instantaneous speed at t= 3 seconds? (1' point} '1') 4.5 mi's II") 5.4 mts E", El} mi's T) 10.8mm If) 12.6 rm's