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Dasar MekanikaKinematika Linear
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Kinematika Linear
Mekanika : Cabang dari ilmu fisika yang mengukur gerak dari suatu objek danmenjelaskan dasar/sebab dari geraktersebut.
Kinematika : Suatu deskripsi yang akurattentang gerak dan merupakan dasar untukbisa mengerti biomekanika dari gerakpada manusia.
Kinetika : Gaya gaya yang menyebabkangerak pada manusia.
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Kinematika
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Kinetika
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Kinematika Linear
Kinematika berkisar antara deskripsi
anatomi dari pergerakan sendi hingga
pengukuran matematika secara tepat dari
gerak muskuloskeletal
Terbagi menjadi Linear dan Angular
Gerak Linear : Pergerakan dimana semua
bagian tubuh berjalan dengan jarak yang
sama diwaktu yang sama dan arah yang
sama. 2titik Paralel
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Kinematika Linear
Kinematika = Studi tentang geometri, pola
atau bentuk gerak yang berkenaan dengan
waktu.
Kinematika Linear : Studi tentang bentuk,
pola dan rangkaian gerak linear dengan
waktu tanpa menyinggung gaya atau gaya
yg menyebabkan gerakan atau gaya yang
disebabkan oleh gerakan tersebut.
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Besaran Kinematika Linear
Seorang mahasiswa pamor meninggalkan
basecampnya dan berjalan mendaki
gunung selama 4 jam. Jika posisi akhirnya
berjarak 1,3 km dari basecampnya secara
relatif ketika diukur dengan pedometer.
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Besaran Kinematika Linear
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Besaran Kinematika Linear
Jarak (distance / l ) dan Perpindahan
(displacement / d )
◦ Satuannya adalah satuan panjang.
◦ Meter (m), Inci, foot/kaki, yard (0,91 m), Mil
(1,61 km)
Jarak = skalar
Perpindahan = vektor
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Besaran Kinematika Linear
Speed (kelajuan) dan Velocity (kecepatan)
◦ Speed is how fast an object is moving without
regard to direction.
◦ Speed = l / t
◦ Satuan speed = m/s, ft/s, km/hr dll
◦ Konversi nilai ??
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Besaran Kinematika Linear
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Besaran Kinematika Linear
Velocity (kecepatan)
◦ Velocity is the vector corresponding to speed.
◦ V = d / t
◦ Satuannya = speed
◦ Vector = vertikal, horisontal dan resultan
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Besaran Kinematika Linear
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Besaran Kinematika Linear
Let's assume that dE = 8 m and dW = 2
m and that the time it took this
student to change stations was 10
seconds.
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Besaran Kinematika Linear
Acceleration (percepatan)
◦ Is how quickly velocity is changing
◦ Velocity changes when speed or direction
change.
◦ a = v / t
◦ m/s2 , ft/s2
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Besaran Kinematika Linear
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Refresing