If you were on the moon, and you were trying to move a 20-lb bowling ball and a 3-foot cube of styrofoam, which item would take more work to move? why? a. the bowling ball; it is a harder object b. the styrofoam; it is larger c. the bowling ball; it has greater mass anywhere d. the styrofoam; it weighs more on the moon

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?