Which Best describes a characteristic of the jet stream?

Find v(t), given acceleration a(t)=7j and initial velocity v(0)=k

If a simple machine reduces the strength of a force, what must be increased?

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?