2points
you throw a football straight up into the air with a speed of 12.2 m/s. how
high does the ball go?
o
o
a. 7.6 m
b. 9.1 m
o
c. 3.2 m
o
d. 0.62 m
submit

it about 600 mph from what i calculated

spectral lines lyman is one set

ice to water 1 water to vapour 2 latent heat

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.