Jeff found the key to exit the tower and wanted to give it to Rapunzel. If her hand is 200m above the ground, what is the required velocity for Jeff to toss the key to reach her in m/s?

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.

the answer is f1 and d2 because if you put equal force on those two points the beam would balance trust me on this

false.

explanation:

this statement is false. after falling for 5 seconds, its speed will not be 100 m/s.