高中物理题(解答过程完整,该计算换算都写完整,谢谢) 物理计算题（详细解答！！！谢谢！！！）
\u9ad8\u4e2d\u7684\u7269\u7406\u9898\uff0c\u8dea\u6c42\u89e3\u51b3\uff0c\u8868\u59b9\u57fa\u7840\u6bd4\u8f83\u5dee\uff0c\u80fd\u591f\u9644\u4e0a\u5b8c\u6574\u89e3\u7b54\u8fc7\u7a0b\u6700\u597d\uff0c\u975e\u5e38\u611f\u8c22~~~\u60c5\u51b5\u662f\u8fd9\u6837\u7684\u3002\u6709\u4e00\u4e2a\u6728\u5757\u5728\u90a3\u91cc\u597d\u597d\u7684\u6302\u7740\uff0c\u7a81\u7136\u6709\u4e00\u652f\u7bad\u6c34\u5e73\u98de\u4e86\u8fc7\u6765\uff0c\u5e76\u76f4\u76f4\u5730\u649e\u4e86\u4e0a\u53bb\u3002\u5c31\u5728\u8fd9\u4e00\u77ac\u95f4\uff0c\u52a8\u91cf\u7684\u8f6c\u6362\u5b8c\u6210\u4e86\u3002\u5b8c\u6210\u52a8\u91cf\u8f6c\u6362\u540e\u7684\u7bad\u4e5f\u5b8c\u6210\u4e86\u5b83\u5728\u8fd9\u9053\u9898\u91cc\u7684\u4f7f\u547d\uff0c\u53ef\u4ee5\u4e0d\u7528\u7ba1\u5b83\u4e86\u3002\u4f46\u662f\uff0c\u90a3\u652f\u7bad\uff0c\u7ed9\u4e86\u6728\u5757\u591a\u5c11\u901f\u5ea6\u5462\uff1f\uff08\u56fe\u4e2d\u5df2\u6709\u7b54\u6848\uff09\u7528\u52a8\u91cf\u5b88\u6052\u53ef\u77e5\u2026\u2026\u800c\u4e14\u8fd9\u4e2a\u901f\u5ea6\u4e5f\u662f\u6c34\u5e73\u7684\u3002\u5728\u83b7\u5f97\u4e86\u6c34\u5e73\u7684\u901f\u5ea6\u540e\uff0c\u6728\u5757\u8feb\u4e0d\u53ca\u5f85\u7684\u60f3\u8981\u6c34\u5e73\u51b2\u51fa\u53bb\u4e86\uff0c\u4f46\u662f\uff0c\u7ef3\u5b50\u7ea6\u675f\u4e86\u5b83\u3002\u6728\u5757\u4e0d\u5f97\u4e0d\u505a\u4ee5\u7ef3\u5b50\u4e0a\u7aef\u4e3a\u5706\u5fc3\uff0c\u7ef3\u5b50\u957f\u4e3a\u534a\u5f84\u7684\u5706\u5468\u8fd0\u52a8\u3002\u6211\u4eec\u77e5\u9053\uff0c\u8fd9\u65f6\u5019\u7ef3\u5b50\u7ed9\u6728\u5757\u7684\u529b\u662f\u59cb\u7ec8\u4e0e\u6728\u5757\u8fd0\u52a8\u65b9\u5411\u5782\u76f4\u7684\u3002\uff08\u56e0\u4e3a\u8fd9\u662f\u5411\u5fc3\u529b\u7684\u53cd\u4f5c\u7528\u529b\uff09\u4e5f\u5c31\u662f\u8bf4\uff0c\u8fd9\u4e2a\u529b\uff0c\u5b83\u4e0d\u505a\u529f\u3002\u6240\u4ee5\uff0c\u7531\u673a\u68b0\u80fd\u5b88\u6052\u53ef\u4ee5\u77e5\u9053\uff0c\u5728\u6728\u5757\u505a\u5706\u5468\u8fd0\u52a8\u8fc7\u7a0b\u4e2d\uff0c\u52a8\u80fd\u8f6c\u5316\u6210\u4e86\u91cd\u529b\u52bf\u80fd\uff0c\u5e76\u4e14\u5728\u6700\u9ad8\u70b9\u65f6\u5b8c\u5168\u8f6c\u5316\u3002\uff08\u8ba1\u7b97\u56fe\u4e2d\u6709\uff09\u4e0d\u8be6\u7ec6\u7684\u5730\u65b9\u518d\u95ee\u3002\u987a\u4fbf\u8bf4\u4e00\u53e5\uff0c\u505a\u9898\u8981\u5148\u5206\u6790\uff0c\u50cf\u8fd9\u6837\u5206\u6790\u4e00\u4e0b\uff0c\u628a\u6574\u4e2a\u60c5\u51b5\u641e\u6e05\u695a\u4e86\uff0c\u90a3\u4e48\u5217\u5f0f\u8ba1\u7b97\u5c31\u5f88\u7b80\u5355\u4e86\u3002
\u6c42\uff1a1.\u521d\u901f\u5ea6\u591a\u5927\uff1f
2.\u518d\u7ecf\u591a\u957f\u65f6\u95f4\u7269\u4f53\u843d\u56deA\u5904\uff1f
????
\u8bbe\u521d\u901f\u4e3av,\u5219\u7531
v^2-(0.25v)^2=2gh
\u53ef\u5f97v=8m/s
\u65f6\u95f4t=v/g+0.25v/g=1s
绛旓細鑳介噺瀹堟亽锛1/2m1v1^2+1/2m2v2^2=1/2k(xo-x)^2 姹傝В鍙緱锛歷1=(xo-x)[m2k/m1(m1+m2)]^1/2
绛旓細绗竴棰:瑙:闂細涓嶄細鍑轰簨鏁咃紝灏辨槸闂悜蹇冨姏鍜屾渶澶ф懇鎿﹀姏鍝釜澶 U=72km/h=20m/s 姹借溅鐨勫悜蹇冨姏MV2/R=2000*20*20/50=16000N>F=14000N 鎵浠ヤ細鍑轰簨鏁 绗簩棰:瑙:鐢盫=2蟺R/T寰楋紝T=2蟺R/V锛岃宮'V2/R=GMm'/R2,鎵浠= 鏍瑰彿GM/R 鍚岀悊鍙緱 v=鏍瑰彿Gm/r锛屾墍浠/t=(2蟺R2/GM)...
绛旓細瑙ｇ瓟锛氾紙1锛 瀵瑰皬婊戝潡A浠嶢鍒癘鐨杩囩▼锛鐢ㄦ満姊拌兘瀹堟亽瀹氬緥锛屽彲姹傚嚭瀹冨埌杈綩鐐圭殑閫熷害V锛氱敱 寰 mgh=0.5mV2, 寰梀锛2m/s 锛2锛 鐢卞浘涔欏彲鐭ワ細褰撴粦鍧桝璺濈B鏃讹紝A銆丅闂寸殑鐩镐簰鏂ュ姏涓5N锛屾牴鎹鎰忥紝杩欐椂涔欏垰濂戒篃寮濮嬫粦鍔細鎵浠ユ鏃禕鍙楀埌鐨勬渶澶ч潤鎽╂摝鍔涳紙涔熸槸瀹冨彈鍒扮殑婊戝姩鎽╂摝鍔涳級涔熶负5N锛...
绛旓細1锛夐鍏圶鍜孻鏄90搴﹀瀭鐩寸殑鍏崇郴.浣犵敾鍥剧悊瑙ｄ竴涓 鎬讳綅绉诲疄闄呬笂鏄疿Y浣滀负鐩磋杈瑰洿鎴愪笁瑙掑舰鐨勬枩杈 鎬讳綅绉籹=鏍瑰彿x骞虫柟+y骞虫柟=10m 2锛夊钩鍧囬熷害瑕佸拰骞冲潎閫熺巼鍖哄垎寮鏉 骞冲潎閫熺巼灏辨槸锛6+8锛/2=7 骞冲潎閫熷害鏄10/2=5m/s 1锛夋湁鍏紡Vt=V0-at 寰楀嚭 Vt=12-5*2=2m/s 2锛夌敱鍏紡S=V0t-0.5at^2 S=...
绛旓細瑙ｏ細锛1锛夌畝鍗曪細璁炬粦鍧楀湪鐩掑瓙閲岃繍鍔ㄧ殑璺▼涓簊锛岀敱棰樻剰鍙煡婊戝潡鐢遍熷害v0鍙樻垚鍋滄瀹屽叏鏄敱鎽╂摝鍔涘仛鍔熻屾崯澶辩殑锛岀敱鍔ㄨ兘瀹氱悊鎴栬兘閲忓畧鎭掑畾寰嬫湁锛毼糾gs=(1/2)mv0^2锛岃В寰梥=v0^2/(2渭g)绗竴骞㈡粦鍧楁敮杩愬姩浜哃/2璺▼锛岃纰版挒娆℃暟涓簄锛屽垯鏈夛細L/2+(n-1)*L=s=v0^2/(2渭g)瑙ｅ緱锛歯=v0^2/...
绛旓細V=V0+aT锛0=20-5*T锛孴=4s. 浠庡紑濮嬪埗鍔ㄥ埌杞﹀仠姝㈢敤4绉 X=V0T+0.5at2:20*4-0.5*5*16=80-40=40m 鍦4绉掑唴杞﹁蛋浜40绫 鍥犱负鏈0.4绉掔殑鍙嶅簲鏃堕棿锛屾鏃堕棿鍐呰蛋杩0.4*20=8绫筹紝鎬绘椂闂寸瓑浜4.4绉掞紝姝ゆ椂杞﹀凡鍋滄锛4.4灏忎簬5.4绉掋傛墍浠ユ讳綅绉荤瓑浜40+8=48绫 ...
绛旓細瑙ｇ瓟杩囩▼濡備笅锛屽湪鍥剧墖涓細瀹為檯涓婏紝璺熻繖閲岀殑绗12棰樻槸涓鏍风殑锛歨ttp://www2.chinaedu.com/101resource004/wenjianku/200606/101ktb/lanmu/GTCP0104/GTCP0104.htm
绛旓細鐢遍鎰忥紝鐭ラ亾锛氶檲鑻ョ惓閲嶅績鍦ㄦ渶楂樼偣鍒版墜瑙﹀強姘撮潰鏃剁殑浣嶇Щ涓10.45绫 鍒欑敱鑷敱钀戒綋浣嶇Щ鍏紡寰楀埌锛10.45锛0.5脳g脳t2^2 瑙ｅ緱t2锛1.4457绉掋傚垯鎬绘椂闂磘锛漷1锛媡2锛0.3锛1.4457锛1.7457绉掋備繚鐣欎袱浣嶆湁鏁堟暟瀛椾负1.7绉 鍗抽檲鑻ョ惓浠庣寮璺冲彴鍒版墜瑙﹀強姘撮潰鐨杩囩▼涓彲鐢ㄤ簬瀹屾垚涓绯诲垪鍔ㄤ綔鐨勬椂闂翠负锛1.7...
绛旓細杩欓涔熶笉闅撅紝鍒嗗紑姘村钩鏂瑰悜鍜岀珫鐩存柟鍚戜袱涓柟闈㈡潵鑰冭檻锛氶鍏堬紝绡悆鐢辨按骞虫姏鍑哄埌瑙﹀湴鐨勬椂闂撮棿闅斾负锛氱敱(1/2)gt^2=h,寰梩=0.4s绗竴闃舵锛岀鐞冪敱姘村钩鎶涘嚭鍒拌Е鍦版湡闂达細绡悆瑙﹀湴鐬棿 绡悆绔栫洿鏂瑰悜涓婄殑閫熷害 V绔=g*t=4m/s 绡悆瑙﹀湴鍚庣灛闂 绔栫洿鏂瑰悜涓婄殑閫熷害鍙樹负V ' 绔=V绔*锛3/4锛=3m/s姘村钩鏂瑰悜...
绛旓細鍐嶈绗竴鐐归熷害涓簐锛屽垪鏂圭▼缁勶細鈶爒t + 1/2gt² =0.3脳0.01 鈶(2t) + 1/2g(2t)² = 1.2脳0.01 鎶妕浠ｅ叆锛屽彲浠ユ妸g鍜寁瑙ｅ嚭鏉ワ紝v=0m/s g=9.6 m/s² 灏忕悆鐨勫垵閫熷害鏄疺o=(0.3脳0.01脳6) /(0.025脳2)=0.36m/s 杩嘇鐨勯熷害鏄細鍏堝垎鏋愮珫鐩存柟鍚慥=v(...
