When is at the end of the runway the velocity of the plane is given by the equation
where s=1800 m is the runway length. Thus
At half runway the velocity of the plane is
Therefore at midpoint of runway the percentage of takeoff velocity is
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Answer:
I would say there is friction against the floor, air resistance, and gravity.
Explanation:
To determine the velocity of the ball falling, we need to use one kinematic equation which will allow as to calculate for the height of the skyscraper. This formula is expressed as:
y = v0t + at^2 / 2
v0 = 0 since it started at rest
a = g since it acts upon the gravitational force
t = 5 s
y = (9.81)(5)^2 / 2
y = 122.625 m
To obtain velocity we divide the height with time,
v = 122.625 / 5 = 24.53 m/s
closest would be option C.