February 2019 1 48 Report
Kedudukan suatu partikel dinyatakan dengan persamaan posisi r = [(3t² - t)i + (4t² + t)j] m. Besar percepatan partikel saat t= 1 s adalah...

a) 14 m/s²
b) 12 m/s²
c) 10 m/s²
d) 9 m/s²
e) 7 m/s²

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