CRITICAL THINKING 2. A 102 kg student on the track team has been training to try and match Usain Bolt's World Record. Usain Bolt completed the 100m dash in 9.58 s. His mass is 96 kg What kinetic energy would the student need to match Usain Bolt's kinetic energy? What would the student's speed have to be to match that record?​

car a and b are moving in opposite directions

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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.

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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.

that would be because of both gravity and friction. so     c