Can you explain to me why?

Using the given data table, calculate the acceleration of the skateboarder. you can use either form of the equation below?

Explain earth's motion, using the terms "precession" and "rotation" in your answer.

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?