### Some Doubts I Want To Be Cleared

Look these are just a few questions from a layman's pint of view . I am just a student of class 9 so these might be very lame . If this is the case then you don't need answer them otherwise I will be greatly obliged to you if you kindly take the burden of answering my questions . Thank you . Here are the questions :- 1) When a dip is formed on the trampoline the marble ball comes and falls and collides with the pool ball , but in reality nothing comes and collides with the earth . Now if you answer that this happens because other plants also create such dips but in that case this will cancel out the attraction . But again in reality the attractive force prevails although nothing collides with the earth . In fact how can dip be the cause of attraction ?? dip causes attraction only to the particles within the dip circle and not outside . But according to Newton attraction prevails between every particle . Did you get my point ?? How will you explain this phenomenon ??
2)A dip in the trampoline is formed by the pool ball only when the two ends are pulled . If any one end is let loose , no dip is formed an the pool ball falls through that end . And if both ends are let loose no dip forms . Then in case of earth what forms this stretch ?? The universe is unending then if there is no end of the space then how can the dip form ??
3) Space is complete vacuum . Without any particle how can the dip be formed ??
4) In string theory it is said that the finest indivisable particle of nature is not point sized but intead it is a string with a definite length . But then is it not true that throughout this length of a string even more fundamental particles can exist which are in turn point sized particles ??
So i conclude here , if i have more doubts I will comment here . Plz answer which ever question u like it would be better if u answer all . but if u think any question to be lame then skip it . Thank You .

- SRIJANAK DE