2. A stone is thrown vertically upward with a speed of 15.0 m/s from the edge of a cliff of height 95 m. Ignore air resistance. [10] I. "Using the upward direction positive" and using kinematics equation, determine the velocity with which it strikes the base. II. "Using the upward direction positive" determine the position of the stone at 2.3 s after it was thrown upward from the top of the cliff.