He nui vector ka wikiwiki , ʻoiai he nui scalar ka velocity . Loaʻa i ka wikiwiki ka nui a me ke kuhikuhi, ʻoiai he nui wale nō ka velocity. ʻO ke anakahi honua he mika i kekona, i hoʻopōkole ʻia ʻo m/s a i ʻole ms -1 . ʻO kona hōʻailona ʻo v ( velocity ).
ʻO ka wikiwiki awelika a me ka wikiwiki awelika
Laʻana pilikia.
1. Hele kekahi haumāna i ka hikina he 2 mika i loko o 1 kekona. He aha ka wikiwiki awelika a me ka nui o ka wikiwiki awelika o ka haumāna?
Pahana
Ka wikiwiki awelika = 2m/s
Ka wikiwiki awelika = 2m/s
ʻAra = kuhikuhi ka neʻe ʻana = hikina
2. Hele kekahi haumāna i ka hikina he 2 mika i loko o 1 kekona, a laila hele i ke komohana he 1 mika i loko o 2 kekona. He aha ka wikiwiki awelika a me ka wikiwiki awelika o ka haumāna?
Pahana
Ka wikiwiki awelika = (2 mika + 1 mika) / (1 kekona + 2 kekona) = 3 mika / 3 kekona = 1 m/s
Nui = (2 mika – 1 mika) / (1 kekona + 2 kekona) = 1 mika / 3 kekona = 1/3 m/s
ʻAra = kuhikuhi o ka neʻe ʻana = hikina.
Ka wikiwiki koke a me ka wikiwiki koke
Ka wikiwiki koke = mamao liʻiliʻi loa / manawa pōkole loa. I nā huaʻōlelo ʻē aʻe, ʻo ka wikiwiki koke he mamao liʻiliʻi loa i hele ʻia i loko o kahi manawa pōkole loa. Inā ua holo mua ʻoe i kahi mokokaikala a kaʻa paha, e ʻike ʻoe e loli mau ana ka wikiwiki o ka mokokaikala a kaʻa paha i kēlā me kēia manawa ʻoiai e neʻe ana ka mokokaikala a kaʻa paha. Hōʻike ʻia kēia wikiwiki koke e ka speedometer.
Ka nui o ka wikiwiki koke = ka neʻe liʻiliʻi loa / ka manawa pōkole loa. I nā huaʻōlelo ʻē aʻe, ua hele kahi neʻe liʻiliʻi loa ma luna o kahi manawa pōkole loa.
He mea nui e hoʻomaopopo he hiki iā kākou ke pani i ka wikiwiki me ka wikiwiki . Ua manaʻo ʻia ka wikiwiki e like me ka wikiwiki no ka mea ua like ka mamao a me ka neʻe ʻana inā he liʻiliʻi loa lākou. ʻOiai ʻaʻole like mau ka mamao a me ka neʻe ʻana (cf. ke kūkākūkā ʻana no ka mamao a me ka neʻe ʻana), inā he liʻiliʻi loa ka mamao a me ka neʻe ʻana, pono lākou e like ka waiwai.
