jika x=5tpangkat3+10t pangkat 2 tentukan percepatan sesaat jika t=2sekon

x = 5t³ + 10t²
v = turunan x
= 15t² + 20t
a = turunan v
= 30t + 20

t =2
a = 30(2) + 20
= 60 + 20
= 80 m/s²