a playground is on the flat roof of a city scgool, 6.00 m above the street below. The vertical wall of the building is h = 7.00 m high, forming a 1-m-high railing around the playground. A ball has fallen to the street below, and a passerby returns it by launching it at an angle of $\theta = 53.0^o$ above the horizontal at a point d = 24.0 m from the base of the building wall. The ball takes 2.20 s to reach a point vertically above the wall. Find the vertical distance by which the ball clears the wall.

i dont know how to do this :/

Question

a playground is on the flat roof of a city scgool, 6.00 m above the street below. The vertical wall of the building is h = 7.00 m high, forming a 1-m-high railing around the playground. A ball has fallen to the street below, and a passerby returns it by launching it at an angle of $\theta = 53.0^o$ above the horizontal at a point d = 24.0 m from the base of the building wall. The ball takes 2.20 s to reach a point vertically above the wall. Find the vertical distance by which the ball clears the wall.

i dont know how to do this :/

anonymous · Answer

first draw a picture of the scene, I would use the kinematics equation vf^2=vi^2+2ad and solve that for D eventually first I need to know if there is an added 7meters on top of the 6m tall building?

anonymous · Answer

kind of hard to tell without seeing a pic