On a certain planet the gravitational field near the surface has magnitude

PHYSICS · Single correct · AP · Physics 1: Algebra-based · Work Energy and Power · Work Energy and Power

Problem

g = 6.0\,\text{m/s}^2

. A

1.5\,\text{kg}

rock is thrown straight upward and momentarily comes to rest

4.0\,\text{m}

above the launch point. If the zero of gravitational potential energy is chosen to be

12\,\text{m}

above the launch point, what is the rock’s gravitational potential energy at its highest point? (a)

72\,\text{J}

(b)

60\,\text{J}

(c)

-72\,\text{J}

(d)

36\,\text{J}