Is a person sleeping on his bed at rest?

Yes

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Can't say

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Solution

The correct option is C Can't say
The person is at rest with respect to earth. Here, the question doesn't specify the observer. We already learnt that in order to analyse if a body is in motion or not we need both observer and observed. Hence we cannot say if the person is at rest or not.

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Is a person sleeping on his bed at rest?

The correct option is C Can't sayThe person is at rest with respect to earth. Here, the question doesn't specify the observer. We already learnt that in order to analyse if a body is in motion or not we need both observer and observed. Hence we cannot say if the person is at rest or not.

The correct option is C Can't say
The person is at rest with respect to earth. Here, the question doesn't specify the observer. We already learnt that in order to analyse if a body is in motion or not we need both observer and observed. Hence we cannot say if the person is at rest or not.