What is the minimal initial velocity of the ball if it lends exactly in the right corner?
Find the second and third values (after the minimal one) of velocity too. The ball is kicked horizontally, near to the Earth's surface.
Seriously. Have you enhanced the original Lysergic Acid Diethylamide formula?
Hint: The ball is free falling independently on its motion to the left. Thus, knowing the height h (together with gravitational acceleration g) is enough to calculate the time ball needs to reach the corner. Than we can use the same fact to calculate initial velocity...
I haven't been back in awhile and I saw this was not solved so I decided to solve it. It really looks a lot harder than it is.
x-x0=1/2at^2 (there is no initial velocity in the y direction)
t1/4.9)^1/2 s=0.45 s
The horizontal distance traveled is 2(.5m)=1 m
So the initial velocity is 1m/0.45 s=2.21 m/s
by flysky5 years ago
What is the height of the ball horizontally kicked (see figure)?...if the angle alpha is 45 0 and the coefficient of friction is 0.21. Due to the friction the ball will stop after 1m.
by IDONO5 years ago
How does an outfielder in baseball know exactly where a fly ball is going to come down?Are these guys that good at geometry or logorythmns with such speed?
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