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a) In a frame of reference S( though the...

a) In a frame of reference S( though the net force is zero, the net acceleration is not zero.
b) In a frame of reference `S_2` though the net force is not zero, the net acceleration is zero.
c) In a frame of reference`S_3` the net acceleration is zero whenever the net force is zero.

A

`S_(1)` and `S_3` are inertial and `S_2` is non-inertial

B

`S_(1)` and `S_2` are non-inertial and `S_3` is inertial

C

`S_(1), S_(2), S_(3)` are non-inertial

D

`S_(1), S_(2), S_(3)` are inertial

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The correct Answer is:
B
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