Question

A physics book of unknown mass is dropped 5.00 m. What speed does the book have just before it hits the ground? Assume that air resistance is negligible

Answer 1

Vf^2 = Vo^2 + 2g*d,
Vf^2 = 0 + 19.6*5 = 98,
Vf = 9.90 m/s.