The reason we do not observe relativistic effects (such as time dilation or leng

Question

The reason we do not observe relativistic effects (such as time dilation or length contraction) at ordinary speeds on earth is that...

Special relativity is valid at all speeds, but the effects are normally too small to observe at ordinary speeds on earth.

Special relativity is valid only when the speed of an object approaches that of light.

We do readily observe relativistic effects for objects such as jet planes.

None of those.

Special relativity is valid at all speeds, but the effects are normally too small to observe at ordinary speeds on earth.

Special relativity is valid only when the speed of an object approaches that of light.

We do readily observe relativistic effects for objects such as jet planes.

None of those.

Explanation / Answer

Special relativity is valid only when the speed of an object approaches that of light.

Special relativity is valid only when the speed of an object approaches that of light.

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