According to the Guinness Book of World Records, the longest home run ever measu
ID: 1900665 • Letter: A
Question
According to the Guinness Book of World Records, the longest home run ever measured was hit by RoyExplanation / Answer
We have to determine the flight time. Ignoring air resistance, the time from the launch height to max height is equal to the time from max height back to launch height. At max height, Vy(t) = 0. Vy slows to a stop before falling at g. Vy(t) = Vyo - gt => Vyo/g = t where t is the time to max height from launch height The time to fall back to the launch height is t = Vyo/g At the moment the ball reaches the launch height Vxf=Vxo and Vyo = -Vyo At h=0.9m the ball has not traveled 188m. We we can draw a right triangle with height 0.9, angle 56 degrees because ignoring air resistance, the impact angle is 56 degrees from the negative x axis. Therefore, the difference in the horizontal distance at the launch height is x and 0.9/x = tan56 so x = 0.9/tan56 = 0.607m 188-0.607=187.4m which is the distance traveled in 2t = 2Vyo/g at Vxo tan56=Vyo/Vxo => Vyo = Vxotan56 Vxo*2t = Vxo*2*Vxo*tan56/g = 187.4 => sqrt(187.4*g/2*tan56) = Vxo=24.9m/s Vyo=36.9 and Vo = 44.5m/s at d = Vxo*t = 116 => t = 116/Vxo = 4.66s h(t) = 0.9 + 44.5*sin56 * 4.66 - 4.9*4.66^2 = 66.4m
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