A target lies flat on the ground 3m from the side of a building which is 10m tall. A student rolls a ball off the horicontal roof of the building in the direction of the target. Air resistance is negligible. Te horizonal speed with which the ball must leave the roof if it is to srike the target is most nearly
a) 3/10 m/s
b)sqrt(2) m/s
e)10sqrt(5/3) m/s

time to fall=sqrt( 2height/g)

horizontal velocity= 3/time to fall

You need to put some thinking down. For me to answer is not helpful to you.

  1. 👍
  2. 👎
  3. 👁
  1. jf

    1. 👍
    2. 👎
  2. jf, john ur a complete asswipe

    1. 👍
    2. 👎

Respond to this Question

First Name

Your Response

Similar Questions

  1. Precalculus

    To estimate the height of a building, two students find the angle of elevation from a point (at ground level) down the street from the building to the top of the building is 33 degrees. From a point that is 300 feet closer to the

  2. Calculus

    "A 9-foot wall stands 30 ft from the building. find the length of the shortest straight beam that will reach to the side of the building from the ground outside the wall". So I believe I need to start with the Pythagorean Theorem

  3. Mathematics

    From points A and B on level ground, the angles of elevation of the top of a building are 25° and 37° respectively. If |AB| = 57 m, calculate, to the nearest metre, the distances of the top of the building from A and B if they

  4. Calculus I

    The 8-ft wall shown here stands 27 ft from the building. Find the lenght of the shortest straight beam that will reach to tthe side of the building from the ground outside the wall. ANSWER 46.87ft How do i solve???

  1. university of saint la salle

    a projectile is fired with an initial velocity of 800 ft/s at a target of 12000 ft downrange and at an elevation of 3000 ft above the ground, neglecting air resistance, determine the angle(s) that can be used to reach the target.

  2. Algebra

    A 10 foot ladder is to be placed against the side of a building. The base of the ladder must be placed at an angle of 72degree with the level ground for a secure footing. Find to the nearest inch, how far of the ladder should be

  3. Physics

    One kind of slingshot consists of a pocket that holds a pebble and is whirled on a circle of radius r. The pebble is released from the circle at the angle θ so that it will hit the target. The angle in the drawing is 33.4°. The

  4. maths

    From point AandB on level ground,the angle of elevation of the top of a building are 25degree and 37degree respectively.if |AB|〓57m,calculate,to the nearest metre,the distances of the top of the building from AandB if they are

  1. Trig

    The angle of depression from the top of the building to a point on the ground is 29degrees30', the point of the ground is 36 meters from the top of the building. Find the height of the building

  2. Physics

    A 8.78 -m ladder with a mass of 23.8 kg lies flat on the ground. A painter grabs the top end of the ladder and pulls straight upward with a force of 236 N. At the instant the top of the ladder leaves the ground, the ladder

  3. calculus

    A ladder 13 feet long is leaning against the side of a building. If the foot of the ladder is pulled away from the building at a constant rate of 8 inches per second, how fast is the area of the triangle formed by the ladder, the

  4. math trigonometry

    1. Two straight roads intersect to form an angle of 75". Find the shortest distance from one road to a gas station on the other road 10o0 m from the junction. 2. Two buildings with flat roofs are 60 m apart. From the roof of the

You can view more similar questions or ask a new question.