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A diver dives from a 10 m springboard. The equation

f(t)=−4.9t2+4t+10
models her height above the pool at time t in seconds. At what time does she enter the water?

User VCNinc
by
8.5k points

1 Answer

2 votes

Answer:

0.8163265306

Explanation

here f(t) is distance which is 10m.

so

10= -4.9t²+4t+10

then solve this

-4.9t²+4t=0

-4.9t+4=0

4.9t=4

t=4÷4.9

time is 0.8163265306 seconds

User Zhengkenghong
by
7.9k points
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