If upward direction is chosen as positive

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

Problem

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

g

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

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

(b)

0

(c)

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

(d)

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