Question

Superman problem

Answer 1

Determined to test 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?

Answer 2

How many feel per second is the student falling?

Answer 3

That's the complete question

Answer 4

Nevermind then....I suck in this area