Answer:
An
inertial observer is one which is unaccelerated (i.e., a = 0); A non inertial
observer is an accelerated
observer.
(a)
On this basis, we find that
(b)
a child revolving in a giant wheel is a non-inertial observer.
(c)
a driver with a constant speed is an inertial observer.
(d)
at take off, aeroplane has an acceleration. Therefore, the pilot is a
non-inertial observer.
(e)
a cyclist negotiating a sharp turn has an acceleration. Therefore, he is a
non-inertial observer.
(f)
the guard of the train is a non-inertial observer, as the train in this case
has retardation.
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