# Lightning Strikes Twice

Classical Mechanics Level 4

Using a good sighting compass and a stopwatch it was observered that a lightning bolt struck the ground $$16°$$ West of North from my position. The resulting thuder crack was heard $$2.8 s$$ later. Another lightning bolt was spotted hitting the ground at $$44°$$ West of North. The thunder rumble associated with that bolt was heard $$9.2 s$$ after seeing the lightning. How far apart were the two lightning strikes expressed in $$km$$?

Assume the speed of sound is $$340 \frac{m}{sec}$$

Image credit: Wikipedia أسامة الطيب

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