October 2018 1 89 Report
Posisi sebuah partikel bergerak sebagai fungsi waktu dinyatakan dengan persamaan r = (4t² - 2t + 3) i (3t + 4) j, t dalam sekon dan r dalam meter. Tentukan
a. kecepatan pada saat t = 2s;
b. posisi partikel pada saat t = 3s;
c. besar dan arah kecepatan pada saat t = 3s
Tolong jwab dengan benar. trmkash
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