One ball is dropped vertically from a window. at the same instant, a second ball is thrown horizontally from the same window. which ball has the greater speed at ground level?

a. neither—they both have the same speed on impact.

b. it depends on how hard the ball was thrown.

c. the dropped ball.

d. the thrown ball.

d-The thrown ball

Explanation:

Given

First ball is dropped from window at a height suppose h

therefore velocity of ball at the ground

second ball is thrown horizontally suppose with a velocity of u therefore taking horizontal and vertical motion separately

horizontal velocity will remain same as there is no gravity in horizontal direction

vertical velocity at ground of second ball

horizontal velocity is u

net velocity will be

thus velocity of second ball be more as compared to first

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.