Question

Soal ad pada gambar nmr 6. soal tentang persamaan gerak.

Answer 1

V = dx/DT
= d(4t + 2t^2 + t^3)/dt
= 4 + 4t + 3t^2

a = dv/dt
= d(4 + 4t + 3t^2)/dt
= 4 + 6t

a(pada 2 s) = 4 + 6 (2)
= 22 ms^-1

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