12. A projectile is launched from ground level with an initial velocity of 25 m/s at an angle of 27 degrees above the horizontal. (a) Draw a picture of the situation and label the known variables.

(b) What are the magnitudes of the y-component and x-component of the initial velocity? ( v0y and v0x )

(c) What is the maximum height that the projectile reaches?

(d) How much time does it take for the projectile to reach the maximum height?

(e) How far in the horizontal direction does the projectile hit the ground again?

Wo small variable-thrust jets are actuated to keep the spacecraft angular velocity about the z-axis constant at ? 0 = 1.16 rad/s as the two telescoping booms are extended from r1 = 1.18 m to r2 = 4.69 m at a constant rate over a period of 124 seconds. the small 19-kg experiment modules at the ends of the booms may be treated as particles, and the mass of the rigid booms is negligible. determine the necessary thrust t for each jet as a function of time where t = 0 is the time when the telescoping action is begun. after you have the general expression for t, answer the questions. show work.