Which of the following quantities measured from different inertial reference frames are same?

Question

(a) Force
(b) Velocity
(c) Displacement
(d) Kinetic energy

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Answer 1 · 2018-03-13T07:05:25

I think #->(a)# #"force"# and #->(d)# #"kinetic energy"#.

Energy and force are always same but displacement and velocity may vary.

That's all what I think.