Đồ thị dịch chuyển - thời gian

Home Lớp 10 Vật lý 10 - Sách kết nối tri thức Bài 7: Đồ thị dịch chuyển - thời gianBài tập cơ bản

{"common":{"save":0,"post_id":"6314","level":1,"total":10,"point":10,"point_extra":0},"segment":[{"id":"5756","mon_id":"1158790","chapter_id":"1158795","post_id":"6314","question":"Khi v\u1eadt chuy\u1ec3n \u0111\u1ed9ng th\u1eb3ng theo m\u1ed9t chi\u1ec1u không \u0111\u1ed5i thì…<\/p>","options":["A. \u0111\u1ed9 d\u1ecbch chuy\u1ec3n và quãng \u0111\u01b0\u1eddng \u0111i \u0111\u01b0\u1ee3c có \u0111\u1ed9 l\u1edbn nh\u01b0 nhau","B. v\u1eadn t\u1ed1c và t\u1ed1c \u0111\u1ed9 có \u0111\u1ed9 l\u1edbn nh\u01b0 nhau","C. A & B \u0111\u1ec1u \u0111úng","D. A & B \u0111\u1ec1u sai"],"correct":"3","level":"1","hint":"Khi v\u1eadt chuy\u1ec3n \u0111\u1ed9ng th\u1eb3ng theo m\u1ed9t chi\u1ec1u không \u0111\u1ed5i thì \u0111\u1ed9 d\u1ecbch chuy\u1ec3n và quãng \u0111\u01b0\u1eddng \u0111i \u0111\u01b0\u1ee3c có \u0111\u1ed9 l\u1edbn nh\u01b0 nhau, v\u1eadn t\u1ed1c và t\u1ed1c \u0111\u1ed9 có \u0111\u1ed9 l\u1edbn nh\u01b0 nhau.<\/p>","answer":"Ch\u1ecdn C. Khi v\u1eadt chuy\u1ec3n \u0111\u1ed9ng th\u1eb3ng theo m\u1ed9t chi\u1ec1u không \u0111\u1ed5i thì \u0111\u1ed9 d\u1ecbch chuy\u1ec3n và quãng \u0111\u01b0\u1eddng \u0111i \u0111\u01b0\u1ee3c có \u0111\u1ed9 l\u1edbn nh\u01b0 nhau, v\u1eadn t\u1ed1c và t\u1ed1c \u0111\u1ed9 có \u0111\u1ed9 l\u1edbn nh\u01b0 nhau.<\/strong><\/span><\/p>","type":"choose","extra_type":"classic","user_id":"147","test":"0","date":"2022-10-13 09:04:20","option_type":"txt","len":3},{"id":"5757","mon_id":"1158790","chapter_id":"1158795","post_id":"6314","question":"N\u1ebfu m\u1ed9t v\u1eadt chuy\u1ec3n \u0111\u1ed9ng ng\u01b0\u1ee3c chi\u1ec1u d\u01b0\u01a1ng thì…<\/p>","options":["A. quãng \u0111\u01b0\u1eddng \u0111i \u0111\u01b0\u1ee3c và t\u1ed1c \u0111\u1ed9 có giá tr\u1ecb d\u01b0\u01a1ng, \u0111\u1ed9 d\u1ecbch chuy\u1ec3n và v\u1eadn t\u1ed1c có giá tr\u1ecb âm","B. quãng \u0111\u01b0\u1eddng \u0111i \u0111\u01b0\u1ee3c và v\u1eadn t\u1ed1c có giá tr\u1ecb d\u01b0\u01a1ng, \u0111\u1ed9 d\u1ecbch chuy\u1ec3n và t\u1ed1c \u0111\u1ed9 có giá tr\u1ecb âm","C. quãng \u0111\u01b0\u1eddng \u0111i \u0111\u01b0\u1ee3c và \u0111\u1ed9 d\u1ecbch chuy\u1ec3n có giá tr\u1ecb d\u01b0\u01a1ng, t\u1ed1c \u0111\u1ed9 và v\u1eadn t\u1ed1c có giá tr\u1ecb âm","D. quãng \u0111\u01b0\u1eddng \u0111i \u0111\u01b0\u1ee3c, \u0111\u1ed9 d\u1ecbch chuy\u1ec3n, t\u1ed1c \u0111\u1ed9 và v\u1eadn t\u1ed1c có giá tr\u1ecb âm"],"correct":"1","level":"1","hint":"T\u1ed1c \u0111\u1ed9 chuy\u1ec3n \u0111\u1ed9ng:  $\\nu=\\frac{s}{t}$<\/span> V\u1eadn t\u1ed1c chuy\u1ec3n \u0111\u1ed9ng:  $\\overrightarrow{\\nu}=\\frac{\\overrightarrow{d}}{t}$<\/span><\/p>","answer":"Ch\u1ecdn A. T\u1ed1c \u0111\u1ed9 chuy\u1ec3n \u0111\u1ed9ng:  $\\nu=\\frac{s}{t}$<\/span> V\u1eadn t\u1ed1c chuy\u1ec3n \u0111\u1ed9ng:  $\\overrightarrow{\\nu}=\\frac{\\overrightarrow{d}}{t}$<\/span> Trong m\u1ecdi tr\u01b0\u1eddng h\u1ee3p, quãng \u0111\u01b0\u1eddng \u0111i \u0111\u01b0\u1ee3c s luôn d\u01b0\u01a1ng nên t\u1ed1c \u0111\u1ed9   luôn d\u01b0\u01a1ng. \u0110\u1ed9 d\u1ecbch chuy\u1ec3n là \u0111\u1ea1i l\u01b0\u1ee3ng có h\u01b0\u1edbng, nên: + khi v\u1eadt chuy\u1ec3n \u0111\u1ed9ng theo chi\u1ec1u d\u01b0\u01a1ng thì d > 0; v > 0; + khi v\u1eadt chuy\u1ec3n \u0111\u1ed9ng theo chi\u1ec1u âm thì d < 0; v < 0. V\u1eady n\u1ebfu m\u1ed9t v\u1eadt chuy\u1ec3n \u0111\u1ed9ng ng\u01b0\u1ee3c chi\u1ec1u d\u01b0\u01a1ng thì quãng \u0111\u01b0\u1eddng \u0111i \u0111\u01b0\u1ee3c và t\u1ed1c \u0111\u1ed9 có giá tr\u1ecb d\u01b0\u01a1ng, \u0111\u1ed9 d\u1ecbch chuy\u1ec3n và v\u1eadn t\u1ed1c có giá tr\u1ecb âm.<\/strong><\/span><\/p>","type":"choose","extra_type":"classic","user_id":"147","test":"0","date":"2022-10-13 09:08:18","option_type":"txt","len":3},{"id":"5758","mon_id":"1158790","chapter_id":"1158795","post_id":"6314","question":"\u0110\u1ed3 th\u1ecb d-t là \u0111\u1ed3 th\u1ecb c\u1ee7a<\/p>","options":["A. quãng \u0111\u01b0\u1eddng \u0111i \u0111\u01b0\u1ee3c theo th\u1eddi gian","B. \u0111\u1ed9 d\u1ecbch chuy\u1ec3n theo th\u1eddi gian","C. v\u1eadn t\u1ed1c theo th\u1eddi gian","D. t\u1ed1c \u0111\u1ed9 theo th\u1eddi gian"],"correct":"2","level":"1","hint":"\u0110\u1ed3 th\u1ecb d-t là \u0111\u1ed3 th\u1ecb c\u1ee7a \u0111\u1ed9 d\u1ecbch chuy\u1ec3n theo th\u1eddi gian.<\/p>","answer":"Ch\u1ecdn B. \u0110\u1ed3 th\u1ecb d-t là \u0111\u1ed3 th\u1ecb c\u1ee7a \u0111\u1ed9 d\u1ecbch chuy\u1ec3n theo th\u1eddi gian.<\/strong><\/span><\/p>","type":"choose","extra_type":"classic","user_id":"147","test":"0","date":"2022-10-13 09:09:37","option_type":"txt","len":2}]}