(3%) Problem 24: A 20-kg child slides down a playground slide with a constant acceleration of a = 2.8 m/s parallel to the surface of the slide. The child starts sliding with an initial speed of vo. Refer to the figure. Otheexpertta.com A 33% Part (a) Enter an expression for the child's speed squared, vf-, at the bottom of the slide in terms of a, vo, and the length of the slide, d. Grade Summary Deductions 0% Potential 100% B a 7 8 9 HOME Submissions b d g 5 6 Attempts remaining: 999 h K 2 3 (0% per attempt) m n P + END detailed view S t VO BACKSPACE CLEAR Submit Hint Feedback I give up! Hints: 0% deduction per hint. Hints remaining: 1 Feedback: 0% deduction per feedback. A 33% Part (b) If the slide is 4.0 m long and the child's final speed is vy= 5.0 m/s, what is their initial speed, in meters per second? 4 33% Part (c) When starting from rest, how long, in seconds, does it take the child to reach the bottom of the slide