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Vektor
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Vektor: besaran yang memiliki besar dan arah
Contoh…….
VEKTOR
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• Vektor memiliki besar dan arah
• Vektor digambarkan oleh
sebuah panah
• Besar vektor panjang panah
• Arah vektor arah panah
• Notasi: ,
PHET: https://phet.colorado.edu/
DIAGRAM VEKTOR
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TRIGONOMETRI
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KOMPONEN VEKTOR
https://www.geogebra.org/m/QGYDPzJ2https://www.geogebra.org/m/UNFMFbPh
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PENJUMLAHAN VEKTOR
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PENJUMLAHAN VEKTOR
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Phytagorean Theorem
PENJUMLAHAN VEKTOR
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https://www.geogebra.org/m/HMje3hdthttps://www.geogebra.org/m/FCknj7c3
• Metode segitiga
• Metode paralelogram
• Metode analitik
PENJUMLAHAN/PENGURANGAN VEKTOR
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METODE ANALITIK
Arah 𝑥 Arah 𝑦
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PERKALIAN SKALAR DAN VEKTOR
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Dot Product hasil: skalar
Secara geometris, dot product dari vektor A dan B
adalah perkalian antara panjang vektor A dengan
proyeksi vektor B pada vektor A.
Ilustrasi dot product
https://www.geogebra.org/m/KMifob4i
PERKALIAN VEKTOR: DOT PRODUCT
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PERKALIAN VEKTOR: DOT PRODUCT
Suku silang (warna
merah)
Suku langsung(biru)
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Cross Product hasil: vektor
Secara geometris, nilai cross product vektor A dan Bsama dengan luas bidang yang dibentuk olehvektor A dan B
https://www.geogebra.org/m/pcMtbdq8
https://www.geogebra.org/m/psMTGDgc
PERKALIAN VEKTOR: CROSS PRODUCT
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PERKALIAN VEKTOR: CROSS PRODUCT
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A student drives his car 6.0 km, North before making a right hand turn and driving 6.0 km to the East. Finally, the student makes a left hand turn and travels another 2.0 km to the north. What is the magnitude of the overall displacement of the student?
LATIHAN
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Max plays middle linebacker for South's football team. During one play in last Friday night's game against New Greer Academy, he made the following movements after the ball was snapped on third down. First, he back-pedaled in the southern direction for 2.6 meters. He then shuffled to his left (west) for a distance of 2.2 meters. Finally, he made a half-turn and ran downfield a distance of 4.8 meters in a direction of 240° counter-clockwise from east (30°W of S) before finally knocking the wind out of New Greer's wide receiver. Determine the magnitude and direction of Max's overall displacement.
LATIHAN
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A motorboat traveling 4 m/s, East encounters a current traveling 3.0 m/s, North.
a. What is the resultant velocity of the motorboat?
b. If the width of the river is 80 meters wide, then how much time does it take the boat to travel shore to shore?
c. What distance downstream does the boat reach the opposite shore?
LATIHAN