Science

A ball is thrown upward at 20 metres per second off the top of a building that is 12 m high.

What is the height of the ball above the ground at its highest poin?

  1. 👍 0
  2. 👎 0
  3. 👁 131
  1. v = Vi - g t
    0 = 20 - 9.81 t at top when v = 0
    t = 2.04 seconds
    h = 12 + Vi t -(1/2) g t^2
    h = 12 + 20(2.04) -4.9(2.04)^2
    h = 32.4 meters

    1. 👍 0
    2. 👎 0
    posted by Damon

Respond to this Question

First Name

Your Response

Similar Questions

  1. phusics

    A ball is thrown vertically upward from top of a building with speed of 20m/s. On the way back ball misses the building and lands on the ground. Total time the ball is in air is 6 seconds. Determine the height of the building.

    asked by mark matat on February 14, 2011
  2. Math: Word Problem

    A ball is thrown upward from the top of a building which is 96ft tall w/ Initial velocity of 80 ft per sec. Distance s(ft) of ball from the ground after t sec is s=96+80t-16t^(2) 1) how many sec. will the ball pass the top of the

    asked by Amy~ on September 7, 2010
  3. physics

    Assume acceleration due to gravity=10 m/s. A ball is thrown vertically upward from top of a building with speed of 20 m/s. On the way back ball misses the building and lands on the ground. Total time the ball is in air is 6

    asked by Mark on February 14, 2011
  4. general physics

    Assume acceleration due to gravity=10 m/s. A ball is thrown vertically upward from top of a building with speed of 20 m/s. On the way back ball misses the building and lands on the ground. Total time the ball is in air is 6

    asked by mark matat on February 14, 2011
  5. physics

    A ball is thrown from the top of a building upward at an angle of 66 ◦ to the horizontal and with an initial speed of 16 m/s. The ball is thrown at a height of 53 m above the ground and hits the ground 33.2074 m from the base of

    asked by Anonymous on November 8, 2009
  6. Physics

    A ball is thrown at an angle of 37.1degrees above the horizontal from a point on the top of a building and 60m from the edge of the building. It just misses the edge of the building and continues on towards the ground. The

    asked by Anonymous on March 13, 2008
  7. Physics

    A ball is thrown upward from the top of a 24.6 m tall building. The ball's initial speed is 12 m/s. At the same instant, a person is running on the ground at a distance of 31.2 m from the building. What must be the average speed

    asked by Jenn on September 23, 2012
  8. physic

    A ball is thrown upward from the top of a 24.4 m tall building. The ball's initial speed is 12 m/s. At the same instant, a person is running on the ground at a distance of 31.4 m from the building. What must be the average speed

    asked by Anonymous on August 29, 2012
  9. Physics

    A ball is thrown upward from the top of a 50.0 m tall building. The ball's initial speed is 12.0 m/s. At the same instant, a person is running on the ground at a distance of 44.0 m from the building. What must be the average speed

    asked by Kelly on February 5, 2012
  10. physics

    A ball is thrown upward from the top of a 24.4-m-tall building. The ball's initial speed is 12 m/s. At the same instant, a person is running on the ground at a distance of 30.2 m from the building. What must be the average speed

    asked by mae on August 30, 2011

More Similar Questions