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ra1l [238]
3 years ago
11

The height of a balloon is given by the fucntion

Mathematics
2 answers:
Mila [183]3 years ago
7 0
V is slope of graph s-t
v(t) = s'(t) = -1920t + 26400
v(5) = -1920(5) + 26400
Viktor [21]3 years ago
7 0
16800 metres

Working
i) Differentiate the given function to get the velocity function:
ds/dt = =1920t+ 26400
Then replace the value of t with 5 hours
v(t)= -1920(5)+26500
v(t)= -9600+26500
V(5)= 16800 m
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