Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Physics
Physics
Problem
If upward direction is taken as positive, what is the sign of acceleration of a stone that is simply dropped from the top of a tower? a) Positive b) Negative c) Zero d) Cannot be decided
Browse the problem library