speed

In everyday use and in kinematics, the speed (commonly referred to as v) of an object is the magnitude of the change of its position; it is thus a scalar quantity. The average speed of an object in an interval of time is the distance travelled by the object divided by the duration of the interval; the instantaneous speed is the limit of the average speed as the duration of the time interval approaches zero.
Speed has the dimensions of distance divided by time. The SI unit of speed is the metre per second (m/s), but the most common unit of speed in everyday usage is the kilometre per hour (km/h) or, in the US and the UK, miles per hour (mph). For air and marine travel the knot is commonly used.
The fastest possible speed at which energy or information can travel, according to special relativity, is the speed of light in a vacuum c = 299792458 metres per second (approximately 1079000000 km/h or 671000000 mph). Matter cannot quite reach the speed of light, as this would require an infinite amount of energy. In relativity physics, the concept of rapidity replaces the classical idea of speed.

View More On Wikipedia.org
Recent contents
  1. D

    Train letu aerodynamic zinakataa kufika 200 KM/HR . According to Scientific Research of why the body should be streamline to archive speed and balance

    Hakika! Hebu tujadili ulimwengu wa treni zenye umbo la kubana na kwa nini ni muhimu kwa kufikia kasi kubwa kama vile 200 km/saa. ## Treni Zenye Umbo la Kubana: Umuhimu wa Kasi ### 1. Umuhimu wa Aerodynamics Treni zenye umbo la kubana, au "streamliners," zinabuniwa na umbo lenye mvuto. Hapa...

  2. INTERNET SPEED: Tuone internet speed Yako ya leo

    Aya wakuu, weka picha tuone speed Yako ya internet Leo Tumia FAST kujua speed ya internet inayotumia Mimi naanza👇🏿

  3. Engine ya gari kutoa sauti Kali unapopita kwa speed Kali kwenye rasta

    Heri ya Christmas na mwaka mpya. Wakuu Leo nilikuwa na safari ndefu kidogo Sasa nilikuwa nilikuwa natembeza kachombo kangu kwa speed. Baadaye nikaanza kusikia mlio mkubwa wa kugonga kwenye engine nikipita kwenye rasta kwa speed. Kausafiri kalizima Kama mara moja kutokana na iyo hali. Je...

  4. LATRA: Mabasi 759 yanayofanya safari za Usiku yanazidisha Speed na kuchezea mfumo wa ufuatiliaji taarifa za gari (VTS)

    Mwezi mmoja tangu Serikali iruhusu safari za mabasi kwa saa 24, tathimini ya mamlaka za usimamizi imeonyesha kuwepo ukiukwaji mkubwa wa sheria na kanuni za usalama barabarani, hali inayohatarisha usalama kwa abiria na mali zao. Kutokana na ukiukwaji huo, ndani ya muda huo mabasi 759 yamekamatwa...

  5. TBT: Need For Speed 2, Tuipakue tukumbushane enzi na Tufurahi, inakubali windows 7, 8, 10, 11.

    Kumbukizi ya moja ya Games za zamani zilizochezwa sana na watoto na vijana miaka ya 2000 ni Need for speed. Unakumbuka kuicheza? Ulikuwa na umri gani? ipakue hapa chini ukumbushie enzi 🙂 Dah ebhana ee!! mi nime cheza tangu 2002 hadi 2009, ilikuwa inapigwa knockout ya kufa mtu. Nilikuwa...

  6. Ngwair ft Chid benz - speed 12 vs Nipsey Hussle - kush n haze

    Ipi Kali Sana kati ya hizi ngoma speed 120 iliyotoka 2008 au kush n haze iliyotoka 2006. Nimekuwekea ngoma zote mbili hapo uzisikilize Dondosha maoni hapo chini👇👇 NB:RIP kwa Albert Mangwea RIP kwa Nipsey Hussle Long live kwa Chid Benz
  7. R

    Tufikirie science kidogo The theory of relativity says that the faster the speed, the slower time passes by Albert Einstein

    Ina maana kuwa nikienda mwezini na chombo chenye speed inayokaribia na speed of light (you can not attain the speed of light anyway), basi sitazeeka maana time itarudi nyuma! Ageing process will slow down. sasa kwanini tusiwe na mashine yenye speed kubwa kiasi kwamba time will slow down na...
  8. D

    Hakuna tofauti kati ya mtalaka aliyezaa na mshale wa speed: Hata utembee nae speed gani kuna mahali tu mshale utarudi zero

    Kuoana na mtalaka yataka moyo sana! Yaani hakuna tofauti na mshale wa speed! Jaza mafuta mengi, tembea ujuavyo lakini mashimo kidogo tu lazima mshale urudi chini! Maisha ya mtalaka mnapoanza safari ni matam sana! Lakini kadri mnavyokwenda taratibu ndiyo unagundua kwanini ulimkuta single! Hata...
  9. P

    Kushuka thamani kwa TZS dhidi ya USD ni speed ya 7G

    Habari wana JF, Naomba kuuliza: Hivi hii speed ya TZS kushuka thamani dhidi ya USD kuna maanisha nini kiuchumi? Asanteni

  10. Ni kweli kubadilisha Pull ya mota kunaongeza au kupunguza speed yake

    Mota ya mashine ya alizeti inasumbua sasa nataka kuibadilisha nichukue ya mashine ambayo motor yake ina speed na mashine ya alizeti haiitaji speed.Nimeambiwa ninaweza kuitumia hiyo mota ya hiyo mashine ngingine ila nibadilisha pull itakuwa na speed ya kawaida.Swali ni je ni kweli kubadilisha...

  11. China wafanya majaribio ya treni ya speed 1,000km/h

    A Chinese research team has successfully completed the country's first full-size superconducting test run for an ultra-high-speed magnetic levitation (maglev) train, which, once completed, will be capable of running at a whopping 1,000 kilometers per hour under ideal conditions. Developed by...

  12. Hali ni mbaya kwenye ubunifu wa Programming kwa wahitimu wa IT Tanzania, Roughly 80% wanaishia kujua html tu.

    Wengi huwa wanaambulia html tena ile basic kabisa, wachache angalau wataongezea php, javascript, wachache sana hawa wenye passion ndio wataingia mpaka kwenye python, c#, c++, java... Hapa nazungumzia kuelewa kwa lengo la uundaji na ubunifu sio kukariri tu kwajili ya test kisha baada ya hapo vina...
  13. K

    Ipo haja ya vinywa vya wahubiri kufungiwa speed governor?

    Nimepita mahala muda sio mfupi na kumkuta mtumishi mmoja wa bwana akitoa mahubiri yenye ukakasi kwelikweli huku akishangiliwa kwelikweli na hadhara yake,nimemsikia kwa masikio yangu mawili eti akisema wanawake wa sasa hivi wamekuwa mercenaries Hii ni sawa kweli kumfananisha mwanamke na Wagner...

  14. Miyeyusho: Kwa hii speed ya tigo kuna mtu anaefaidi internet yao?

    Hawa jamaa naona ni zaidi ya miyeyusho, kwa kipindi kirefu hawataki kubadilika. Na hapa ni jioni tu, ukitaka kuijua speed ya kobe subiri ifike saa mbili usiku.

  15. Hivi ni mimi ninayekula chakula kwa Speed au nyie Wenzangu mnawezaje kutumia nusu saa kwenye kula tu?

    Mimi banaa, nmekulia kwenye huu ustaharabu wa Kila mtu na Sahani yake. Lakini napo ilikua inanibidi kumwambia mwanandugu tuchanganye Msosi tule fasta fasta , sio kwamba lengo lilikua nikumpiga KO kama ambavyo wengi wasomaji mwaweza kudhania, la Hasha, lengo ilikuaga ni Ili tuwahi kumaliza...

  16. Hiki ndicho kitu chenye speed kuliko vyote na anacho binadamu

    Fikra au Mawazo. Speed yake haijaweza pimwa mpaka sasa. Ukikaa ndani ya sekunde unaweza ukawaza umefika Ulaya na kurudi Tz. Ilhali hujanyanyua hata nyusi. Unaweza waza mambo kadhaa ndani ya musa mfupi sana au ukaenda sehemu na lazima kurudi ndani ya muda huo huo mfupi kwa mawazo. Hata unaweza...

  17. Bajaji, guta, pikipiki zinanunuliwa kwa Kasi Sana

    Ikiwa Ni mwaka mmoja na mwezi mmoja Toka namba D ya vyombo hivo vianze kwa Sasa wanasajili no MC**** DR* Ambapo kwenye magari walitumia muda mrefu sana kufika usajili huo, Ni wazi Hadi mapema mwaka ujao watakuwa wamemaliza no D yao na kuanza fukuzana na no D ya magari na kuwaacha forever...

  18. Msaada: Nini Sababu ya Gari Kuwa na Vibrations Kubwa Ikifika Speed 50+

    Tafadhali wataalamu, nini inaweza kuwa sababu ya gari kuwa na mtikisiko mkubwa inapofikia speed 50 na kuendelea, mtikisiko huo unaambatana na mvumo fulani usiojulikana unatoka wapi, mafundi zaidi ya wanne kwa nyakati tofauti na garage tofauti ikiwepo Kinondoni na Ilala wamediagnos na kukosa...

  19. Haiwezekani pikipiki kwa ajili ya bodaboda zikiwa ni maalum kwa kuwa na speed isiyozidi 70?

    Hili ni wazo ambalo nimelitafakari kutokana na ndugu zetu hawa kuendelea kuangamia kwa kasi ya kutisha. Je, haiwezekani pikipiki kwa ajili ya bodaboda zikawa zinatengenezwa kwa mfumo maalum usiozidisha speed 70 kph, kwa usalama wao, pia kuondosha kabisa tatizo hili?

  20. Calculate average speed

    an aircraft takes one hour to fly from town A to town B at 500km/h. It returns via the same route at 250km/h. Calculate its average speed.
Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…