Which is an example of an explosion? a. soccer player kicking a ball into the goal. b. a cannon firing. c. two cars collide and move off together. d. a bowling ball hitting the pins.

B.) a cannon firing off.

This is the only logical option that involves somewhat of a explosion.

B. A cannon firing,

Is the only correct and logical answer, because we all know th other options couldn't cause an explosion...

LOL also glad i could help!

3.2x10^7

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.