Jawabanmu

2014-03-22T15:08:02+07:00
A=v/R
a = 72/1.10⁻³
a = 7200m/s²

maaf kalau salah
2014-03-22T18:05:33+07:00
V = 72 km/jam = 20 m/s... Jadi a = v^2/R = 20^2/1 = 400 m/s2