121. Lava Bombs A volcano shoots out blobs of molten lava, called lava bombs, from its summit, as shown in
Figure 3.33. A geologist observing the eruption uses
a stopwatch to time the flight of a lava bomb that is
projected straight upward. If the time for it to rise to
its maximum height is 2.38 s and its acceleration is
9.81 m/s2 downward, what was its initial speed?
x