The angular acceleration of the blade when it's switched off is (-6800 rev/min) divided by (2.8 sec) = -2,428.6 rev/(min-sec) = -40.5 rev/sec^2 .
Answer:
distance, x = 38.17 m
Given:
velocity of the football, v = 20.5 m/s
football projected at an angle,
Period of flight, T = 2.15 s
Solution:
Since, the velocity is projected at some angle, so it can be resolved in horizontal and vertical components:
vertical component,
horizontal component,
the component responsible to cover certain distance is
Therefore, the distance covered by the football, x is given by:
⇒
x = 38.17 m
It is called the Coriolis Effect. It is caused by the rotation of the Earth.