You are climbing in the High Sierra where you suddenly find yourself at the edge of a fog-shrouded cliff. To find the height of this cliff, you drop a rock from the top and 9.30s later hear the sound of it hitting the ground at the foot of the cliff.

Part A
Ignoring air resistance, how high is the cliff if the speed of sound is 330 m/s?
Express your answer with the appropriate units.
h =
Part B
Suppose you had ignored the time it takes the sound to reach you. In that case, would you have overestimated or underestimated the height of the cliff?