某物体沿水平方向运动,其v-t图象如图所示,规定向右为正方向,下列判断正确的是 (  ). A.在0 某物体沿水平方向做直线运动,其v-t图象如图所示,规定向右为...

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CD

  • 鏌愮墿浣撴部姘村钩鏂瑰悜杩愬姩,鍏秜-t鍥捐薄濡傚浘鎵绀,瑙勫畾鍚戝彸涓烘鏂瑰悜,涓嬪垪鍒ゆ柇姝 ...
    绛旓細CD 鐢变簬杩愬姩鍥捐薄琛ㄧず鐨勬槸閫熷害闅忔椂闂村彉鍖栫殑瑙勫緥锛岃屼笉鏄繍鍔ㄧ殑杞ㄨ抗锛屾晠0锝1 s琛ㄧず鐨勬槸鍙橀杩愬姩锛鏁呴夐」A閿欒锛1锝2 s閫熷害鏄湪鍑忓皬锛屼絾浣嶇Щ涓烘锛岃〃绀轰粛鐒跺悜鍙宠繍鍔紝鎵浠ラ夐」B閿欒锛1锝3 s閫熷害鍥剧嚎涓虹洿绾胯〃绀哄姞閫熷害澶у皬鏂瑰悜閮戒笉鍙橈紝閫熷害鍑忓皬琛ㄧず鍑忛燂紝鏁呭姞閫熷害鏂瑰悜鍚戝乏锛屽ぇ灏忎负a锛 锛 m/s ...
  • 鏌愮墿浣撴部姘村钩鏂瑰悜鍋氱洿绾杩愬姩,鍏秜-t鍥捐薄濡傚浘鎵绀,瑙勫畾鍚戝彸涓烘鏂瑰悜,涓嬪垪...
    绛旓細鏃堕棿杞翠笅鏂归熷害鏄礋鏁帮紱鎵浠ュ湪鍦╰s锝炲緱s鍐咃紝鐗╀綋鐨勯熷害涓烘鏁帮紝浠栫洿鍚戞鏂瑰悜鍋氱洿绾杩愬姩锛屾晠A姝g‘锛嶣銆佸湪ls锝3s鍐咃紝鐗╀綋鐨勯熷害涓烘鏁帮紝浠栫洿鍚戞鏂瑰悜锛堝彸锛夊仛鐩寸嚎杩愬姩锛屾枩鐜囦笉鍙橈紝鍔犻熷害涔熶笉鍙橈紝鏁匓閿欒锛嶤銆佸湪閫熷害鏃堕棿鍥捐薄涓紝
  • ...姘村钩鐩寸嚎杩愬姩,鍙栧悜鍙崇殑鏂瑰悜涓鸿繍鍔ㄧ殑姝鏂瑰悜,鍏秜-t 鍥惧儚濡傚浘鎵绀,鍒欑墿 ...
    绛旓細D 鐢卞浘鍍忕煡鐗╀綋鍏堝悜宸﹁繍鍔ㄥ悗鍚戝彸杩愬姩锛A閿欍傛枩鐜囨亽瀹氾紝涓烘鍊硷紝鐗╀綋鍋氬寑鍙橀熺洿绾胯繍鍔紝鍔犻熷害鏂瑰悜濮嬬粓鍚戝彸锛孊閿欍傜敱鍥惧儚涓庢í杞村寘鍥撮潰绉彲鐭ワ紝4S鍓嶇墿浣撳湪O鐐圭殑宸﹁竟锛4S鏃跺洖鍒癘鐐癸紝涓攖 =2s鏃跺埢锛岀墿浣撲笌O鐐硅窛绂绘渶杩滐紝C閿橠瀵广
  • vt鍥惧儚杩愬姩鏂瑰悜鎬庝箞鍒ゆ柇
    绛旓細锛1 锛夊垽鏂杩愬姩鏂瑰悜锛坴锛夊湪鐩寸嚎杩愬姩涓敤閫熷害鐨勬璐熷彿鏉ヨ〃绀鸿繍鍔ㄦ柟鍚 v-t 鍥句腑鍦╰杞寸殑涓婁笅渚у彲鍙嶆槧鍑簐鐨勬璐燂紝鑻-t鍥惧湪t杞翠笅鏂癸紝鍒欓熷害涓鸿礋锛岃〃绀鐗╀綋娌璐鏂瑰悜杩愬姩锛鍙嶄箣鍒欏悜姝f柟鍚戣繍鍔紝鎵浠ュ彲鍒╃敤v-t 鍥剧浉瀵逛簬t杞寸殑浣嶇疆鏉ュ垽鏂墿浣撶殑杩愬姩鏂瑰悜 锛2 锛夊垽鏂姞閫熷害鏂瑰悜 鍦ㄧ洿绾胯繍鍔ㄤ腑鐢ㄥ姞閫熷害鐨...
  • ...姘村钩鐩寸嚎杩愬姩,鍙栧悜鍙崇殑鏂瑰悜涓鸿繍鍔ㄧ殑姝鏂瑰悜,鍏秜-t鍥捐薄濡傚浘鎵绀,鍒欑墿 ...
    绛旓細A锛庣敱鍥捐薄鍙煡锛氬墠2s鍐鐗╀綋鐨勯熷害鍥捐薄鍦ㄦ椂闂磋酱鐨勪笅鏂癸紝璇存槑鐗╀綋鐨杩愬姩鏂瑰悜涓庢鏂瑰悜鐩稿弽锛屽嵆鍚戝乏杩愬姩锛鏁匒閿欒锛 B锛v-t鍥捐薄涓紝鍊炬枩鐨勭洿绾胯〃绀哄寑鍙橀熺洿绾胯繍鍔紝鏂滅巼琛ㄧず鍔犻熷害锛屾枩鐜囨槸姝e艰鏄庢柟鍚戝悜鍙筹紝鏁匓姝g‘锛 C锛庢牴鎹浘璞′笌鍧愭爣杞村洿鎴愮殑闈㈢Н琛ㄧず浣嶇Щ锛庡湪鏃堕棿杞翠笂鏂圭殑浣嶇Щ涓烘锛屼笅鏂圭殑闈㈢Н...
  • ...F鐨勪綔鐢ㄤ笅娌挎按骞闈杩愬姩,鍦╰ 0 鏃跺埢鎾ゅ幓鍔汧,鍏秜-t鍥惧儚濡傚浘鎵绀.宸茬煡...
    绛旓細鏈鍏抽敭瀵瑰姞閫熻繃绋嬪拰鍏ㄩ儴杩囩▼杩愮敤鍔ㄩ噺瀹氱悊姹傚嚭鎺ㄥ姏涓庢懇鎿﹀姏鐨勫叧绯伙紝鐒跺悗鏍规嵁鍔熺殑瀹氫箟姹傝В鎺ㄥ姏鐨勫姛锛涙湰棰樹篃鍙牴鎹墰椤跨浜屽畾寰嬪拰杩愬姩瀛﹀叕寮忚仈绔嬫眰鍑烘帹鍔涳紝浣嗙敤鍔ㄩ噺瀹氬緥杈冧负绠娲併傚湪鍙橀熺洿绾胯繍鍔ㄧ殑閫熷害鍥惧儚涓紝浣嶇Щ涓哄浘绾夸笌鍧愭爣杞村洿鎴愮殑闈㈢Н锛屾椂闂磋酱涓婃柟鐨勯潰绉负姝o紝涓嬫柟鐨勪负璐燂紝鍔犻熷害涓哄浘绾跨殑鏂滅巼銆
  • 鏌愮墿浣撹繍鍔鐨v-t鍥惧儚濡傚浘鎵绀,鍒欎笅鍒楄娉曟纭殑鏄( )
    绛旓細绛旀锛欱C 瑙f瀽锛欰.绗﹀彿姝h礋浠h〃鏂瑰悜锛1s鏃剁鍙锋湭鍙 B.鏂滅巼浠h〃鍔犻熷害锛屾墍浠ョ浉鍚屻備粠鍙︿竴鏂归潰锛屽ぇ灏忓緢瀹规槗鐪嬪嚭鏉ワ紝鏂瑰悜闂锛屽亣璁惧垵濮嬪悜鍙筹紝2s鍐呭噺閫燂紝鍔犻熷害鍚戝乏锛3s鍐呭弽鍚戝姞閫燂紝杩樻槸鍚戝乏锛屾墍浠ュ姞閫熷害鐩稿悓銆侰.鍥惧儚涓巟杞村洿鎴愰潰绉唬琛ㄤ綅绉锛屽叾浠f暟鍜屼负0锛屼綅绉讳负0 D.2s鏃朵篃鏈杩 ...
  • 鍦ㄦ按骞抽潰涓,涓鐗╀綋鍦ㄦ按骞冲姏F浣滅敤涓杩愬姩,鍏舵按骞鍔涢殢鏃堕棿t鍙樺寲鐨勫浘鍍忓強...
    绛旓細浣嶇Щ鏄搴V锛峵 鍥句腑涓夎褰㈤潰绉紝鍗砈1锛4*锛6锛2锛/ 2 锛8绫筹紝杩欐鏃堕棿姘村钩鍔涚殑澶у皬鏄F1锛3鐗涳紝鎵浠ュ姏鍋氬姛鏄W1锛滷1*S1锛3*8锛24鐒﹁ 6锛嶏紞8绉掞紝鐗╀綋鍖閫杩愬姩锛鍙煡姘村钩鍔涘ぇ灏忔槸銆F2锛2鐗涳紝婊戝姩鎽╂摝鍔涘ぇ灏忔槸2鐗涳紝浣嶇Щ鏄S2锛4*锛8锛6锛夛紳8绫筹紝姘村钩鍔涘仛鍔熸槸銆W2锛滷2*S2锛2*8...
  • 鏌愮墿浣撴部涓鐩寸嚎杩愬姩,鍏秜-t鍥捐薄濡傚浘鎵绀,涓嬪垪鎻忚堪姝g‘鐨勬槸( )A.绗1s...
    绛旓細A銆v-t鍥捐薄鐨勬枩鐜囪〃绀哄姞閫熷害锛屽垯绗1s鍐呭姞閫熷害涓烘鍊硷紝绗2s鍐鐗╀綋鐨勫姞閫熷害涓鸿礋鍊硷紝璇存槑鍔犻熷害鏂瑰悜鐩稿弽锛庢晠A姝g‘锛汢銆佺1s鍐呭拰绗2s鍐呯墿浣撶殑閫熷害鍧囦负姝e锛屾柟鍚鐩稿悓锛屾晠B閿欒锛汣銆佺3绉掑唴鍔犻熷害鍜岄熷害閮戒负璐熷硷紝鎵浠ュ姞閫熷害鏂瑰悜鍜岄熷害鏂瑰悜鐩稿悓锛庢晠C閿欒锛汥銆佺敱閫熷害鍥捐薄涓庢椂闂磋酱鍥存垚鐨勯潰绉〃绀轰綅绉讳笖...
  • 鏌愮墿浣撴部鐩寸嚎杩愬姩,鍏秜-t鍥捐薄濡傚浘,鎻忚堪姝g‘鐨勬槸( )A.绗1s鍐呭拰绗2s鍐呯墿...
    绛旓細A銆佺1s鍐呭拰绗2s鍐鐗╀綋鐨勯熷害鍧囦负姝e锛屾柟鍚鐩稿悓锛庢晠A閿欒锛 B銆佺2s鍐呭姞閫熷害涓鸿礋鍊硷紝绗3s鍐呯墿浣撶殑鍔犻熷害涔熶负璐熷硷紝璇存槑鍔犻熷害鏂瑰悜鐩稿悓锛屾晠B閿欒锛 C銆佺3s鍐呯墿浣撶殑閫熷害涓鸿礋鍊硷紝鍔犻熷害涔熶负璐熷硷紝鏂瑰悜鐩稿悓锛屾晠C姝g‘锛 D銆佸浘璞′笌鍧愭爣杞村洿鎴愮殑闈㈢Н琛ㄧず浣嶇Щ锛屽垯鍓4s鐨勪綅绉粁=12脳2脳2?12...
  • 扩展阅读:跑道 ... 现实运动的三种方向 ... 物体的运动方向取决于 ... 一质点沿x方向运动 ... 风向和物体运动方向 ... 一质点沿x轴运动 v 1+3t2 ... 运动平面 ... 当梁上某段作用的均布荷载 ... 既限制物体沿任何方向运动 ...

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