A ball is thrown from 4 feet off the ground with a vertical velocity of 30 feet per second.

Write an equation to model the height of the ball: h = - 16t 2 +

a0 t +

a1

Complete the table.

A ball is thrown from 4 feet off the ground with a vertical velocity of 30 feet per second. Is the ball at its maximum height after 1 second?

Write an equation to model the height of the ball: h = - 16t 2 +

a0 t +

a1

Given the formula; h = (1/2) (-32) * t^2 + 30*t + 4

Solutions:

h = - 16t^2 + 30t + 4

after 1 second the height is

h = 18 ft

the maximum height is

h max = 4 - 30^2 / (4 * (-16))

h max = 18.0625 ft

the ball is not its maximum height after 1 second because 18.0625 18.