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FireStorm6265
31.03.2020 •
Mathematics
Use a(t) = −9.8 meters per second per second as the acceleration due to gravity. (Neglect air resistance.) A canyon is 2100 meters deep at its deepest point. A rock is dropped from the rim above this point. How long will it take the rock to hit the canyon floor? (Round your answer to one decimal place.)
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Ответ:
Step-by-step explanation:
Given that rock experiments a constant acceleration, position function can be obtained by integrating twice:
The initial conditions of the rock are, respectively:
Position of the rock as a function of time is:
The time taken for the rock to hit the canyon floor is:
Ответ:
24%
Step-by-step explanation:
% change =
x 100
; 1050 - 798 = 252
% change =
x 100
% change = 0.24 x 100
% change = 24
the percentage decrease in the number of students enrolled is 24%