Step 1:

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The coefficient of static friction is 0.40.

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The coefficient of kinetic friction is 0.35.

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Horizontal force is 100 N.

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Mass of the box is 20.0 kg.

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Force due to kinetic friction \"\".

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Normal Force \"\", then \"\"

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\"\".

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\"\"

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Net force \"\"

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\"\"

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\"\"

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Net force of the block is 100 N.

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As the applied horizontal force is less than the maximum value (Frictional force), the applied is cancelled out by an equal and opposite force and the block remains at rest.

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Solution:

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Net force of the block is 100 N.

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The block remains a rest.