Veocity is a vector quantity that refers to "tus nqi ntawm qhov khoom hloov nws txoj hauj lwm." Xav txog tej yam ib tug neeg tsiv mus sai - ib kauj ruam rau pem hauv ntej thiab ib kauj ruam rov qab - ib txwm rov qab mus rau qhov qub pib txoj hauj lwm. Thaum qhov no yuav ua rau muaj kev kub ntxhov ntawm kev ua ub no, nws yuav ua rau xoom tshaj tawm.
Yuav ua li cas koj pom qhov nrawm vector?
Siv qhov sib npaug vx=v cos theta txhawm rau nrhiav x kev sib koom ua ke ntawm qhov qub tshaj tawm vector: 44.0 x cos 35 degrees=36.0 Nws. Siv qhov sib npaug vy=v sin theta txhawm rau nrhiav y kev sib koom tes ntawm kev tshaj tawm: 44.0 x sin 35 degrees, lossis 25.2. Yog li qhov nrawm yog (36.0, 25.2) hauv daim ntawv ua haujlwm.
Puas yog lub zog yog vector kom muaj nuj nqis?
Power txhais tau tias yog lub zog (lossis ua haujlwm) hauv ib lub sijhawm. Txij li thaum, lub sij hawm tsis suav hais tias yog vector kom muaj nuj nqis, thiab tsis muaj zog lossis kev ua haujlwm vim tias kev ua haujlwm tsis yog kev taw qhia. … Yog li ntawd, lub hwj chim yog ib scalar kom muaj nuj nqisvim nws muaj ib chav tsev loj tab sis tsis muaj kev taw qhia.
Qhov sib txawv ntawm qhov nrawm thiab nrawm yog dab tsi?
Ceev yog lub sijhawm tus nqi ntawm qhov khoom txav mus raws txoj kev, thaum nrawm yog tus nqi thiab kev taw qhia ntawm qhov khoom txav. … Piv txwv li, 50 km/hr (31 mph) piav txog qhov ceev uas lub tsheb taug kev raws txoj kev, thaum 50 km/hr sab hnub poob piav txog qhov ceev uas nws mus.
Qhov txawv ntawm vector thiab tshaj tawm yog dab tsi?
yog li ntawdvector yog (mathematics) ib qho qhia kom muaj nuj nqis, ib qho nrog ob qho tib si loj thiab kev coj; lub (soplink) nruab nrab ntawm ob lub ntsiab lus thaum lub nrawm yog (physics) ib vector kom muaj nuj nqis uas qhia txog tus nqi ntawm kev hloov ntawm txoj hauj lwm nrog rau lub sij hawm, los yog ib tug ceev nrog rau cov kev taw qhia.
