When upward is chosen as the positive direction

PHYSICS · Single correct · AP · Physics 1: Algebra-based · Kinematics · Kinematics

Problem

When upward is chosen as the positive direction, what is the sign of the acceleration due to gravity

g

for objects in free fall near Earth’s surface? (a)

+9.8\,\text{m/s}^2

(b)

0\,\text{m/s}^2

(c)

-9.8\,\text{m/s}^2

(d) Depends on the object’s initial velocity