Horizontal speed of the ball is given as
![v_x = 4 m/s](https://tex.z-dn.net/?f=v_x%20%3D%204%20m%2Fs)
height of the ball is given as
![h = 500 m](https://tex.z-dn.net/?f=h%20%3D%20500%20m)
now the time taken by the ball to reach the bottom is given as
![h = v_i*t + \frac{1}{2}gt^2](https://tex.z-dn.net/?f=h%20%3D%20v_i%2At%20%2B%20%5Cfrac%7B1%7D%7B2%7Dgt%5E2)
now we will plug in all values
![500 = 0 + \frac{1}{2}*9.8*t^2](https://tex.z-dn.net/?f=500%20%3D%200%20%2B%20%5Cfrac%7B1%7D%7B2%7D%2A9.8%2At%5E2)
![t = 10.1 s](https://tex.z-dn.net/?f=t%20%3D%2010.1%20s)
now the distance from the base is given as
![x = v_x * t](https://tex.z-dn.net/?f=x%20%3D%20v_x%20%2A%20t)
`![x = 4 * 10.1 = 40.4 m](https://tex.z-dn.net/?f=x%20%3D%204%20%2A%2010.1%20%3D%2040.4%20m)
so it will land at distance of 40.4 m
81 joule is the kinetic energy of the golf ball.
K.E= mv²/2
K.E=0.045×60×60÷2
K.E=81 joule
Kinetic energy is a particular kind of power that is present in moving particles or objects. An object gains kinetic energy when work, which involves the transfer of energy, is done on it by exerting a net force. Kinetic energy is a property of motion that depends on the mass and speed of an object or particle. Motion is any combination of vibration, axis rotation, translation, and movement (along a path from one location to another). A body's translational kinetic energy, which is determined by multiplying its mass, m, by the square of its speed, v, is equal to 1/2mv2.
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Because sometimes it happens that they discover a dwarf planet
that nobody ever knew about before. When that happens, they
ADD the new one to the list of known dwarf planets, and then the
total number of dwarf planets on the list increases by 1 .
Try looking up the lesson and book name on the internet. then put "answer sheet"
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