(a) In a frame of reference S_(1), 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) In a frame of reference S_(1), though the net force is zero, the n

1.	(a) In a frame of reference S_(1), 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.
Answer» `S_(1)` and `S_(3)` are inertial and `S_(2)` is NON - inertial `S_(1)` and `S_(2)` are non - inertial and `S_(3)` is inertial `S_(1), S_(2), S_(3)` are non - inertial `S_(1), S_(2), S_(3)` are inertial Answer :B

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(a) In a frame of reference S_(1), 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.

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