9. A heary box is pushed across the surface of a desk to the right. According to Neworto Laws of Motion which of the following statements is correct? The desk exerts an upward force on the box smaller than the bors weight. It is impossible to know how the upward force on the box compares to the boxs weight The desk exerts an upward force on the box greater than the box's weight. The desk exerts an upward force on the box equal to the box's weight.

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Problemas

9. A heary box is pushed across the surface of a desk to the right. According to Neworto Laws of Motion which of the following statements is correct? The desk exerts an upward force on the box smaller than the bors weight. It is impossible to know how the upward force on the box compares to the boxs weight The desk exerts an upward force on the box greater than the box's weight. The desk exerts an upward force on the box equal to the box's weight.

Answer 1

The correct answer is: The desk exerts an upward force on the box equal to the box's weight.<br /><br />According to Newton's Third Law of Motion, for every action, there is an equal and opposite reaction. In this case, the box exerts a downward force on the desk due to its weight, and the desk exerts an equal and opposite upward force on the box. Therefore, the upward force exerted by the desk on the box is equal to the box's weight.

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