Ejercicios de Cinematica

 

Lelrinings Lelrinin gs al Injlfètih5 Fgvnfnljg Fgvnfnlj g rlit`æjlg ujnbgrfl. ujnbg rfl. ]lsg`vlr `gs sndunljls prgm`lfhs5  _rgm`lfh j¿ 8) ·H iuèjtgs f/s lqunvh`l `h vl`ginaha al uj fùvn` qul sl alsp`hzh h 4=kf/c7  Yg`uinùj al` lelrining j¿ 8 al Fgvnfnljtg rli`æjlg ujnbgrfl5 Ahtgs5 v 6 4= kf/c

  _rgm`lfh j¿ =) \j fùvn` vnheh lj `æjlh rlith igj ujh vl`ginaha flanh al 8.=?? if/s aurhjtl > s, y `uldg igj vl`ginaha flanh al 13? if/s aurhjtl 4 s, snljag hfmhs vl`ginahals al` fnsfg sljag5 h) ·iuè` ls l` alsp`hzhfnljtg tgth` lj l` vnhel al 82 s7 m) ·iuè` ls `h vl`ginaha flanh al` vnhel igfp`ltg7  Yg`uinùj al` lelrining j¿ = al Fgvnfnljtg rli`æjlg ujnbgrfl5 Ahtgs5v8 6 8.=?? if/st8 6 > sv= 6 13? if/st= 6 4 sh) L` alsp`hzhfnljtg ls5 x 6 v.t _hrh ihah `hpsg al lfpg5 x8 6 (8=?? if/s).> sx8 6 8?3?? if if

x= 6 (13? if/s).4 sx= 6 992? if L` alsp`hzhfnljtg tgth` ls5 St 6 S8 + x=St 6 8?3?? if + 992? if St 6 8182? if 6 818,2 f  m) Igfg l` lfpg tgth` ls5  Qt 6 t8 + t= 6 > s + 4 s 6 82 82 s Igj l` alsp`hzhfnljtg tgth` rlinîj ih`iu`hag hp`nihfgs5 Αv 6 xt/Qt

Αv 6 818,2 f/82 s Α v 6 3,3< f/s

_rgm`lfh j¿ 9) ]lsg`vlr l` prgm`lfh hjtlrngr, supgjnljag qul `hs vl`ginahals sgj al ansjtg sljag. Yg`uinùj al` lelrining j¿ 9 al Fgvnfnljtg rli`æjlg ujnbgrfl5 h) Yn sgj al ansjtg sljag5 St 6 S8 - S=St 6 8?3?? if - 992? if St 6 411? if 6 41,1 f  m)

 

Αv 6 xt/Q Αv 6 41,1 f/82 s Α v 6 1,2< f/s

_rgm`lfh j¿ 1) Lj l` drèbig, sl rlprlsljth uj fgvnfnljtg rli`æjlg ujngrfl, hvlrndul drèbih y hjh`æihfljtl `h ansthjinh rligrrnah lj `gs prnflrgs 1 s.

  Yg`uinùj al` lelrining j¿ 1 al Fgvnfnljtg rli`æjlg ujnbgrfl5 Ahtgs5 v 6 1 f/s t 6 1s v 6 x/t x 6 v.t

x 6 1 f/s.1 s

x 6 82 f

_rgm`lfh j¿ ? Kf/c. Ih`iu`hr h) su hil`lrhinùj flanh. m) Lsphing rligrrnag lj lsl tnlfpg. ? f/s7

 

2. Yl aleh igrrlr uj iulrpg pgr uj p`hjg nji`njhag al 83 f. al `gjdntua. @h hil`lrhinùj al` fùvn` ls al 1 f/s=; ih`iu`hr h) Qnlfpg qul thrah l` fùvn` lj rligrrlr `h rhfph. m) vl`ginaha qul ``lvh h` h` bnjh`nzhr l` rligrrnag nji`njhag. 4. Ags fùvn`ls sl anrndlj h su ljiuljtrg igj fgvnfnljtg ujnbgrflfljtl hil`lrhag alsal ags pujtgs ansthjtls ljtrl sæ 83? Kf. Yn sl ljiuljtrhj h `gs > s al sh`nr y `gs lsphings rligrrnags pgr `gs fùvn`ls lstèj lj rl`hinùj al 1 h . \j fùvn` sl fulvl igj fgvnfnlj fgvnfnljtg tg hil`lrhag. Lj `gs sldujag sldujagss = y 9 `gs lsphings rligrrnags sgj >? y 8?? f rlsplitnvhfljtl. Ih`iu`hr `h vl`ginaha njninh` al` fùvn` y su hil`lrhinùj. 8?. Ags iulrpgs H y M sntuhags h = Kf al ansthjinh sh`lj snfu`tèjlhfljtl ujg lj plrsliuinùj al` gtrg igj fgvnfnljtg hil`lrhag hfmgs, snljag `h hil`lrhinùj al` fès `ljtg, l` M, al 9= if/s=. Almlj ljigjtrhrsl h 9,?=< Kf. al ansthjinh al` pujtg al phrtnah al` M. Ih`iu`hr h) tnlfpg qul thrahj lj ljigjtrhrsl, m) hil`lrhinùj al H. i) Yus vl`ginahals lj l` fgfljtg al` ljiuljtrg. FGRNFNLJQG AL IHNAH AL I\L]_GY. 8. \jh mgfmn``h ihl al` tlicg al uj trlj qul vh h 1? Kf/c. Ih`iu`hr l` tnlfpg qul thrah lj ihlr sn l` tlicg ansth al` sul`g 1 fltrgs. =. Yl sul`th uj iulrpg snj vl`ginaha njninh`. ·H` ihmg al iuèjtg tnlfpg su vl`ginaha slrè al 1< Kf/c7 9. Alsal `g h`tg al ujh tgrrl sl aleh ihlr uj iulrpg. ·H quî ansthjinh al` sul`g tljarè ujh vl`ginaha nduh` h `h fntha al `h qul tnljl iuhjag icgih igjtrh l` sul`g7 1. \j iulrpg lj ihæah `nmrl phsh pgr uj pujtg igj ujh vl`ginaha al =? if/s. ·Iuè` slrè su vl`ginaha injig sldujags alspuîs y quî lsphing chmrè rligrrnag lj lsl tnlfpg7