Which acceleration does the force of earth’s gravity produce? a. 9.8 m/s/s b. it varies depending on how long it has been falling c. it changes direction every 9.8 meters d. gravity does not produce in acceleration

Arocket starts from rest and moves upward from the surface of the earth. for the first 10.0 s of its motion, the vertical acceleration of the rocket is given by ay = 12.80 m/s32t, where the +y-direction is upward. (a) what is the height of the rocket above the surface of the earth at t = 10.0 s? b) what is the speed of the rocket when it is 325 m above the surface of the earth?