Ask questions and get helpful responses.

math

A ball is thrown into the air with an initial upward velocity of 48ft/s its height h in feet after t seconds is given by the function h = -16t^2 + 48t + 64

6 seconds
4 seconds
7 seconds
5 seconds

  1. 👍
  2. 👎
  3. 👁
  4. ℹ️
  5. 🚩
  1. all or any of the above, depending on the question ...

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
  2. Sorry, I forgot to put part of the question.

    A ball is thrown into the air with an initial upward velocity of 48ft/s its height h in feet after t seconds is given by the function h=-16t^2 + 48t + 64 After how many seconds will the ball hit the ground?

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
  3. when it hits the ground, the height is zero, right?
    so just solve
    -16t^2 + 48t + 64 = 0
    or, dividing by -16,
    t^2 - 3t - 4 = 0
    sure looks like t=4

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩

Respond to this Question

First Name

Your Response

Still need help? You can ask a new question.