# I need some help on an extra credit assignment for my math class.?

A person standing close to the edge on top of a 160 foot building throws a baseball vertically
upward. The quadratic function
s(t) = −16t^2 + 48t + 160
models the ball’s height above the ground, s(t), in feet, t seconds after it was thrown.
a) After how many seconds does the ball reach its maximum height? What is...
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A person standing close to the edge on top of a 160 foot building throws a baseball vertically

upward. The quadratic function

s(t) = −16t^2 + 48t + 160

models the ball’s height above the ground, s(t), in feet, t seconds after it was thrown.

a) After how many seconds does the ball reach its maximum height? What is the maximum

height?

b) How many seconds does it take until the ball finally hits the ground?

c) Find s(0) and describe what this means.

e) Use your graph in part d to find the Domain =

What does this mean?

upward. The quadratic function

s(t) = −16t^2 + 48t + 160

models the ball’s height above the ground, s(t), in feet, t seconds after it was thrown.

a) After how many seconds does the ball reach its maximum height? What is the maximum

height?

b) How many seconds does it take until the ball finally hits the ground?

c) Find s(0) and describe what this means.

e) Use your graph in part d to find the Domain =

What does this mean?

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