Identifying Characteristics of Quadratic Functions

Since the equation gives the height of the ball after

t

seconds, to find the height of the ball after

1

second we will substitute

1

for

t .

h = - 16 t^{2} + 90 t

t = 1

h = - 16 (1)^{2} + 90 (1)

Simplify right-hand side

1^{a} = 1

h = - 16 (1) + 90 (1)

a \cdot 1 = a

h = - 16 + 90

AddTermsAdd terms

h = 74

The height of the ball after

1

second is

74

feet.

Identifying Characteristics of Quadratic Functions 1.6 - Solution