At 12pm, a sailboat leaves a dock headed south at 5mph. at 1pm, the coast guard heads west at 10mph from a point located 2 miles due west of the dock. at what rate is the distance between the two boats changing at 2pm? explain why the sign of your answer makes sens

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?