Suppose the initial position of an object is zero, the starting velocity is 3m/s and the final velocity was 10m/s. The object moves with constant acceleration. Which part of a velocity vs. time graph can be used to calculate the displacement of the object? A. The area of the rectangle under the line
B. The area of the rectangle above the line
C. The area of the rectangle plus the area of a triangle under the line
D. The area of a rectangle plus the area of the triangle above the line

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.