Discuss the relative effectiveness of dieting and exercise in losing weight, noting that most athletic activities consume food energy at a rate of 400 to 500 w, while a single cup of yogurt can contain 1360 kj (325 kcal). specifically, is it likely that exercise alone will be sufficient to lose weight? you may wish to consider that regular exercise may increase the metabolic rate, whereas protracted dieting may reduce it.

the box does not move because you need to use a force greater than 300 n. you are only using 50 n. it needs to at least be 301 n for the box to move because then it is an unbalanced force and it will move the way that the greater force is pushing it. if you use only 300 n it will be a balanced force and will not move because the force you are exerting on the   box is the same as its force.

hope this !

im sorry if i went too in depth, i am going to include a link to a video on khan academy that will explain this.   hope that you like the video and that it explains more in detail to you.

that is the link.

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the right answer is 0.3 meters per second