Question

Question below:

Answer 1

Determined to test Sir.Isaac Newton and the law of gravity for himself,a student walks off a skyscraper 200 m high, stopwatch in hand and starts his free fall (zero initial velocity. Five seconds later, superman arrives at the scene and dives off the roof to save the student.
a.) What must be the magnitude of Superman's initial velocity so that he catches the student just before the ground is reached? (Assume superman's acceleration is that of any freely falling body.

Answer 2

Ah. Find the function describing the displacement of the idiot and the function describing the displacement of that superman.

Answer 3

\(s(t)=\frac{1}{2}at^2+vt+s_0\) relates displacement \(s(t)\) to constant acceleration \(a\), initial velocity \(v\) and initial displacement \(s_0\).