B2 : Daya dan Gerakan I : 2.1 Flashcards

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1
Q

Gerakan linear dinamakan atas..

A

Pergerakan dalam satu lintasan yang lurus

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2
Q

Gerakan linear boleh dihuraikan dari segi…

A

-jarak
-sesaran
-laju
-halaju
-pecutan

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3
Q

Jarak : panjang lintasan y dlalui oleh prgerakan suatu objek

Sesaran: ?

A

Jarak trpendek ntara kdudukan awal dgn akhir prgerakan suatu obj pda stu arah trtntu

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4
Q

Jarak: Nilainya brgntung pd lluan y diambil olh prgrakan obj itu

Sesaran: ?

A

Nilainya sma dgn pnjng gris lurus antara kdudukan awal dgn kdudukan akhir

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5
Q

Jarak: kuantiti skalar

Sesaran: ?

A

Kuantiti vektor

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6
Q

Bacaan meter laju: Malar, Berubah

Malar: Halaju…
Berubah: Halaju…

A

Malar: Halaju seragam (tda pecut)
Berubah: Halaju tda seragam (memecut)

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7
Q

Laju =

A

Kadar perubahan jarak

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8
Q

Halaju =

A

Kadar perubahan sesaran

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9
Q

Pecutan=

A

Kadar perubahan halaju

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10
Q

Rumus laju

A

Jarak y diambil/ masa diambil

v= d/t

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11
Q

Rumus halaju:

A

Sesaran y dilalui / masa diambil

v = s/t

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12
Q

Rumus pecutan:

A

halaju akhir - halaju awal / msa perubahan halaju

a = (v - u) /t

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13
Q

Apakah yang bleh digunakan utk mngkaji prgerakan linear dngan lbih jitu selain jangka masa detik?

A

-sistem photogate dan pemasa elektronik

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14
Q

Mengapaka kaedah mnggunakan sistem photogate dan pemasa lbih elektronik adalah lbih jitu?

A

Kerana tiada pita detik dilekatkan

(Krg mngalami masalh geseran antara pita detik dgn jangka masa detik)

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15
Q

Persamaan gerakan linear pertama

A

pecutan = (halaju akhir - halaju awal) / msa perubahan halaju

v = u + at

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16
Q

Persamaan gerakan linear kedua

A

Sesaran = ( (hlju awal +hlju akhir) / 2) × masa

s = 1/2 (u + v)t

17
Q

Persamaan gerakan linear ketiga

(Gantikan persamaan 1 ke persamaan 2)

A

s = 1/2 ( u + ( u + at))t
s = 1/2 (2u + at)t
s = ut + 1/2at²

18
Q

Persamaan gerakan linear keempat

A

Kuasa duakan persamaan 1

v² = (u + at)²
v² = u² + 2uat + a²t²
v² = u² +2a(ut + 1/2at2) › dripda prsamaan 3: s= ut + 1/2 at²

v² = u² + 2as