Compute all parts of given question:
Question: Superman is standing 124 m horizontally away from Lois lane. A villain drops a rock vertically downward with a speed of 2.26 m/s from 19.3 m directly above Lois.
Part A: If Superman is to intervene and catch the rock right before it hits Lois, what should be his minimum constant acceleration?
Part B: How fast will Superman are traveling when he reaches Louis?
Please show me how work it out above question.