Nā Haʻawina Hoʻonaʻauao Kino Kumu

Ka wehewehe ʻana o ka neʻe laina like

ʻIke kahi mea i ka neʻe laina like inā paʻa ka wikiwiki o ka mea. Hoʻokomo pū ka wikiwiki i ka nui a me ke kuhikuhi o ka wikiwiki. Kuhikuhi o ka wikiwiki = kuhikuhi o ka haʻalele = kuhikuhi o ka neʻe ʻana. Ke kuhikuhi o ka wikiwiki o kahi mea mau = ke kuhikuhi o ka neʻe ʻana o kahi mea mau, a i ʻole ke kuhikuhi o ka neʻe ʻana o kahi mea paʻa = ke neʻe pololei nei ka mea. ʻO ka nui o ka wikiwiki a i ʻole ka wikiwiki he mau = ua like mau ka wikiwiki i nā manawa a pau.

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Ka wehewehe ʻana o ka neʻe laina ʻaʻole like

ʻO ka neʻe laina ʻole like ka neʻe ʻana ma ka wikiwiki mau. I nā huaʻōlelo ʻē aʻe, ʻo ka neʻe laina ʻole like = neʻe me ka hoʻonui ʻana o ka wikiwiki he mau a ʻo ke kuhikuhi o ka wikiwiki he mau. ʻO ke kuhikuhi o ka wikiwiki he mau = ke kuhikuhi o ka wikiwiki he mau = ke kuhikuhi o ka haʻalele he paʻa = kuhikuhi o ka neʻe ʻana he paʻa = neʻe ka mea ma kahi laina pololei. ʻO ka nui o hoʻolalelale mau ʻo ia hoʻi, e piʻi mau ana ka nui o ka wikiwiki a i ʻole ka wikiwiki.

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Article about the Free fall motion

In everyday life, we often see objects that experience free-fall motion, for example, the motion of fruit falling from a tree, the motion of objects that fall or are dropped from a certain height. Why do objects experience free-fall motion? If observed at a glance, the object experiencing free fall as if it has a fixed speed, or in other words the object does not accelerate. The fact that happens, every object that falls freely experiences a constant acceleration. This reason causes free-fall motion, including the example of nonuniform linear motion. How to prove that objects experiencing free-fall experience hoʻolalelale mau or its speed increase?

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Article about the Uniform circular motion

In everyday life, we often encounter objects that move in a uniform circular motion. One example of an object that undergoes uniform neʻe pōʻai is the second needle, the minute needle, and the clock needle on the analog clock. The second needle always rotates at an angle of 360^o no 60 kekona (one minute) or rotates at a 6^o angle for one second. The minute needle always rotates at a 360^o angle for 60 minutes (one hour) or rotates at a 6^o angle for one minute. Hour needle also always rotates 360^o for 24 hours (one day). If an object moves in a regular circle such as a second needle, a minute needle, or a clock needle then the objects are said to be doing the circular motion. Can you think of examples of objects that move in a circular motion?

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The quantities of physics in the circular motion include angular displacement, angular velocity, and angular acceleration.

1. Ka neʻe ʻana o ke kihi (θ)

Displacement in circular motion is called angular displacement. Angular displacement including vector quantities, therefore, has magnitude and directions. The direction of angular displacement is usually expressed in a clockwise direction (clockwise or counterclockwise).

There are three units of angular displacement. First, degree (o). One circumference of the circle is equal to 360^o. Second, revolution. One circumference of the circle is equal to one revolution. Third, radian. Observe the figure below. If an object moves in a circle then r = the radius of the circle, x = the length of the circular path that the object passes = the circumference of the circle.

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ʻAtikala e pili ana i ka neʻe ʻana o ka Projectile a me nā pilikia laʻana me nā hoʻonā

Ka wikiwiki mua (v_o) a me ka ʻāpana o ka wikiwiki mua (v_ox a me v_oy)

He mea nona nā neʻe parabolic e loaʻa mau ana ka wikiwiki mua. No ka mea, ʻo ka neʻe parabolic ka hui pū ʻana o nā neʻe ma nā kuhikuhi ʻaoʻao a me nā kuhikuhi kū, aia pū kekahi mau ʻāpana ʻaoʻao a me nā ʻāpana kū i ka wikiwiki mua.

Inā neʻe parabolical ka mea e like me nā Kiʻi 1 a me 3 a laila ʻo ka wikiwiki mua ma ke kuhikuhi pae (v_ox) a me ka wikiwiki mua ma ke kuhikuhi kū pololei (v_oy) ua helu ʻia me ka hoʻohana ʻana i ka hoohalike:

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ʻAtikala e pili ana i ke kānāwai o ka neʻe ʻana o Newton

1. Wehewehena o ka ikaika

ʻO ka ikaika ka mea e hoʻolalelale ai i nā mea. I nā huaʻōlelo ʻē aʻe, ʻo ka ikaika ka mea e neʻe ai, hoʻōki, a hoʻololi paha i ke kuhikuhi o ka neʻe ʻana o kahi mea. He nui vector ka ikaika, a no laila, he nui a me ke kuhikuhi. ʻO ka hōʻailona ikaika ʻo F (Force). He hōʻailona maʻamau ʻo F no ka ikaika. Nui nā ʻano ikaika a ʻaʻole i loaʻa i nā ikaika āpau ka hōʻailona F. ʻO ke anakahi ʻōnaehana honua ʻo kg m/s2 aka Newton.

2. Wehewehena o ka ikaika upena

ʻO ka ikaika hopena (ΣF) ka huina o nā ikaika āpau e hana ana ma kahi mea. He nui vector ka ikaika, no laila ua helu ʻia ka ikaika holoʻokoʻa ma muli o ke kānāwai hoʻohui vector.

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1. Definition of the friction force

Friction is a drag that works between the surfaces of objects that touch each other. In this topic, the frictional force studied is related to the frictional force acting between two solid body surfaces that touch. Such as friction between the base of the beam and the floor surface, friction between the shoe base and the floor surface, friction between the wheels of the car and the road surface.

The friction force always works on the surface of solid objects that touch each other, even though the object is very smooth. Even smooth surfaces are actually very rough on a microscopic scale. When an object moves, these microscopic ridges interfere with the motion. At the atomic level, a protrusion on the surface causes atoms to be very close to other surfaces, so that the electric forces between atoms can form chemical bonds, as a union between two surfaces of a moving object. When an object moves, for example when you push a book on the surface of the table, the movement of the book experiences obstacles and finally stops. This is due to the formation and release of the bond.

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ʻAtikala e pili ana i ke kānāwai o Newton no ke koʻikoʻi honua

Ma ke kumuhana o ke kānāwai o Newton, ua aʻo ʻia ʻo kēlā me kēia mea i hoʻomaha mua ʻia e lilo i neʻe, a i ʻole kekahi mea e neʻe mua ana e lilo i hoʻomaha inā he "mea" e neʻe a hoʻōki paha i ka mea. Ua kapa ʻia kekahi mea he "ikaika". No ke aha e hāʻule ai ka hua a neʻe paha i ka ʻili o ka honua ma hope o ka hoʻokuʻu ʻia ʻana mai ke kumu? Ke ʻōlelo nei ke kānāwai o Newton inā neʻe ka hua, pono e loaʻa kahi ikaika e hana ana ma luna o ka hua. ʻO ka ikaika e hoʻoulu ai i ka hua a i ʻole kekahi mea e hāʻule i ka ʻili o ka honua ua kapa ʻia ʻo ka ikaika o ke koʻikoʻi.

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ʻAtikala e pili ana i ke kahua umekaumaha a me ka ikaika o ke kahua umekaumaha

Ke paʻi ʻoe i kahi puke ma luna o ka papaʻaina a hiki i ka neʻe ʻana o ka puke, hoʻopā kou lima i ka puke. Pēlā nō, ke nakinaki ʻoe i kahi mea me kahi ʻāpana kaula, a laila huki a hiki i ka neʻe ʻana, hoʻopā kou lima i ke kaula, hoʻopā ke kaula i ka mea. I kēia hihia, ʻo ka ikaika paʻi, ka ikaika huki, ka ikaika uʻi o ke kaula, a me nā ikaika e like me kēia ua kapa ʻia he mau ikaika hoʻopā a i ʻole nā ​​​​ikaika pili. ʻO ka ikaika umekaumaha o ka Honua e huki ana i ka hua e hāʻule ana i ka ʻili o ka honua. A i ʻole, ʻo ka ikaika umekaumaha o ka honua e huki ana i ka mahina i ke kaʻapuni o ka honua e hana ʻia me ka ʻole o ka hoʻopā ma waena o ka honua a me ka hua a me ka mahina.

No laila, ua kapa ʻia nā mana umekaumaha a i ʻole nā ​​mana e like me kēia he mau mana paʻi ʻole. Pehea lā e hāʻule ai nā hua a "hāʻule" ka mahina i ka honua me ka ʻole o ka pā ʻana ma waena o ka honua a me nā hua a me ka mahina? ʻO nā kānaka ʻepekema, me nā Newton, he mea paʻakikī ke noʻonoʻo i ke kumumanaʻo o ka ikaika pā ʻole. I mea e maʻalahi ai ke noʻonoʻo a hoʻomaopopo i ke kumumanaʻo o ka ikaika pā ʻole, ua hāpai ʻia ke kumumanaʻo o ke kahua.

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