The motor pulls on the cable at A with a force F= (30+t2) lb, where t is in seconds. The 34-lb crate is originally on the ground at t = 0. Neglect the mass of the cable and pulleys. (Figure 1) Part A Determine the speed of the crate in t = 3.5 s. Hint: First find the time needed to begin lifting the crate. Express your answer to three significant figures and include the appropriate units. Figure A 1 of 1 = Value Units Submit Request Answer < Return to Assignment Provide Feedback ?