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?

Question

Mathematics

William Hood

23 March, 05:56

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?

+5

Answers (1)

Know the Answer?

Lili · Answer 1

0.8163265306

Step-by-step 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

A diver dives from a 10 m springboard. The equationf (t) = -4.9t2+4t+10models her height above the pool at time t in seconds. At what time does she enter the water?

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?