A bolt of lightning strikes the top of a hill. How long does it take the light from the lightning strike to reach a person standing 8 kilometers away from the hill?

where's the following? you gotta add it to know what the choices are

explanation:

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i just did this and got a 100.

98.4 m

explanation:

let s = distance up the plane  

then by conservation of energy  

1/2m(18.3)^2 = mg s sin(10)  

(18.3)^2 = 2g s sin(10)  

s = (18.3)^2/2gsin(10)  

= 98.39564526  

= 98.4 m