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Pada suatu saat seorang pengendara sepeda berada 40,0 m tepat di sebelah timur dari tiang bendera sebuah taman, bergerak ke arah selatan dengan kelajuan 3 m/s. Lalu 30 s kemudian dia berada 40,0 m tepat di sebelah utara dari tiang bendera tersebut, bergerak ke arah timur dengan kelajuan 8 m/s. Untuk pengendara dalam waktu 30,0 s ini berapakah:
a) besar dan arah perpindahan
b) besar dan arah kecepatan rata-rata
c) besar dan arah percepatan rata-rata.
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Pada suatu saat seorang pengendara sepeda berada 40,0 m tepat di sebelah timur dari tiang bendera se...
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