posted by .

A calculator was dropped at an equation of d= 0.5*9.8t^2 + 5t
How long would it take for the calculator to hit the ground? HINT: SET THE EQUATION TO ZERO.

  • math - typo -

    so, follow the hint

    4.9t^2 + 5t = 0

    a product is zero if either factor is zero.

    Now, do you see a problem with your equation for d?
    Hint: if t>0, d will never be 0.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. math

    solve for x without using a calculator 5^(x+1) = 25 i know that x would equal 1 because 5^2 is 25, but i don't know how to show how to solve it All you need to do is what you just did: Explain that if x = 1, the equation is satisfied. …
  2. cubic function

    I am absolutly stumped at how to solve this. I know for squared functions you take the square root of both sides to solve for x but what about if one side is cubed. I know you would have to take the cubed root of the function but how …
  3. Math

    I have a TI-83 graphing calculator. How do you graph a polar equation on this calculator. Also how would I graph lim 5/x-2 x-->2 in order to find the limit?
  4. Calculator Help

    Is there a difference between TI-89 Titanium calculator and TI-83 calculator?
  5. Physics

    Ball is thrown horizontally off a cliff with an initial speed of 20m/s. a) how long does it take the ball to hit the ground 20m below. b)how long would it take to hit the ground if it was dropped from the cliff?
  6. Physics

    Beatrice throws the 1st calculator straight up from the edge of the roof of a building. She drops a 2nd calculator off the side of the building 2 seconds after she has thrown the first one. If the height of the building is 40m, what …
  7. algebra

    how do you find the square root of any number with long division and not a calculator?
  8. Math

    A ball is dropped from a height of 36 feet. The quadratic equation d=1/2 gt^2 is used to calculate the distance (d) the ball has fallen after t seconds. The constant g is the acceleration of gravity, 9.8m/s^2. How long does it take …
  9. Physics

    Jo student undertakes a unique experiment with his calculator. He goes to the school roof that is 18.0 m above the ground. He throws the poor calculator upward with a velocity of 42 m/s. Assume that the calculator goes straight up …
  10. math

    A relief package is released from a helicopter at 1600 feet. The height of the package can be modeled by the equation h(t)= -16t^2+1600 where h is the height of the package in feet and t is the time in seconds. The pilot wants to know …

More Similar Questions