Answer to Question #173771 in Physics for Alya

Question

A stone is thrown vertically upward and caught as it falls at the same height as it was thrown. If upwards is the positive direction, then what are the signs of the position, velocity and acceleration during the descending part of the trajectory of the stone

Answer 1

Since we choose upwards as the positive direction, then the position, velocity and acceleration during the descending part of the trajectory of the stone would have the sign minus.