Bantuin Pr fisika nmor 2 ni dongg..pakai cara..yang bisa bantuin mkasih ^_^
Pake cara luas arsiran
L1 = 1/2 at
= 1/2.2.4
= 4
L2 = pxl
=4.4
=16
L3 = 1/2 at
= 1/2.2.4
= 4
L4 =1/2.2.-4
=-4
L1+L2+L3+L4
=4+16+4+(-4)
=20
kalo gak salah sih
4×8=32m/s(8 detik)
32-4=28m/s(10 detik)
maaf kalau salah