Asked by Chey

At 3:19 I posted a problem wrong. Should be Mona and Kashi are hiking in the mts. Stopped for lunch on a ledge 1000 ft above the valley. Kishi climbed to a ledge 20 ft above mona. Mona throws an apple up to Kishi, but she missed it. The equation h = - 16t2+ 30t + 1000 represents the height in ft of the apple t seconds after thrown. SO HOW long did it take for the apple to reach the ground? NEXT if it takes 3 seconds to react, will they have time to call down to hikers below. Assume sound travels about 1000 ft per sec
Answered by oobleck
(A) -16t^2+30t+1000 = 0
h=0 when t = 8.90

(B) for the sound, time = distance/speed.
So, what do you think?
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