posted by .

a ball is dropped from a height of 10 ft. if the ball's height after t sec is modeled by the following equation h(t)=-16t^2+10. when does the ball hit the ground?

  • math -

    when it hits the ground, h(t) = 0

    0 = -16t^2 + 10
    16t^2 = 10
    t^2 = 10/16
    t = √10/4 or appr .79 seconds

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. math

    ball is thrown up at 88 ft/s from a height of 25 feet. Path of ball is y = -16t^2 + 88t +25. y is the height of ball above the ground t seconds after being thrown. when does it reach maxiumum height?
  2. 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 …
  3. Algebra

    A ball is thrown into the air. The height h, in feet, of the ball can be modeled by the equation h= -16t^2+20t+6, where t is the time, in seconds, the ball is in the air. When will the ball hit the ground?
  4. Algebra

    A ball is dropped from the top of a building that is 784 feet high. The height of the ball above ground level is given by the polynomial function h(t)= -16t to the second power + vot + ho where t is measured in seconds, vo is the initial …
  5. Math

    Larry kicked a ball at a 50 degrees angle to a direction north. It travels a horizontal distance of 20ft 9inchs before hitting the ground .The ball travels exactly 1min 18 sec after hitting the ground. The ball hit a mud and cause …
  6. Math Calc

    If a ball is thrown vertically upward from the roof of 48 foot building with a velocity of 112 ft/sec, its height after t seconds is s(t)=48+112t–16t^2. What is the maximum height the ball reaches "in ft"?
  7. Math

    If you are standing near the edge of the top of a 200 feet building and throw a ball vertically upward it will be modeled by the function s(t)=-16t^2+64t+200 where s(t) is the ball's height above ground in feet and t is seconds after …
  8. Math

    Marting throws a baseball upwards at a velocity of 80 ft/sec. The following equation models this situation: H (t) = -16t squared + 80t + 6 , where H(t) is the height of the ball in feet and t is the time in seconds after the ball was …
  9. easy Math

    A soccer ball is kicked upward from a hill and then falls to the ground. The height, in feet, of the ball after t sec is modeled by the function h(t) = –16t2 + 26t +12. What is the initial height of the ball?
  10. Math

    A tennis ball is hit into the air and can be modeled by h=16t*2++40t+3, where h is the height t is the time it takes the ball to travel. 1) At what time t does the ball reach its maximum height above the court?

More Similar Questions