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kotykmax [81]
3 years ago
5

A box is pushed horizontally with constant speed across a rough horizontal surface. Which of the following must be true?

Physics
1 answer:
Pavel [41]3 years ago
5 0
D

Because if an object is moving at a constant speed the force of friction must equal the applied (horizontal) force, and for it to be accelerating or decelerating, the force of friction and the applied force must be unequal
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23 electrons

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Which scientific law describes the relationship between action and reaction force pairs? Newton's third law of motion Kepler's l
Hitman42 [59]

Newton's third law of motion

Explanation:

Newton's third law of motion states that:

<em>"When an object A exerts a force on an object B (action force), then object B exerts an equal and opposite force (reaction force) on object A"</em>

It is important to note that this law is always valid, even when it seems it is not.

Consider for example the gravitational force that the Earth exerts on your body (= your weight). We can say that this is the action force. It may seems that there is no reaction force in this case. However, this is not true: in fact, your body also exerts an equal and opposite force on the Earth, and this is the reaction force. The reason that explains why we don't notice any effect on Earth due to this force is that the mass of the Earth is much larger than your mass, therefore the acceleration produced on the Earth because of the force you apply is negligible.

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brainly.com/question/11411375

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4 years ago
Which of the following groups of elements do not have a change and why?
zheka24 [161]

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kobusy [5.1K]

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8.1 x 10^13 electrons passed through the accelerator over 1.8 hours.

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6 0
3 years ago
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