nomor 2 tolong jawabkan

V0=20m/s
t glb=0.8s
a=-7m/s^2
Vt=0

s glb=20×0.8=16m

a=Vt-V0/tglbb
-7=0-20/tglbb
tglbb=20/7

sglbb=20×20/7 - 1/2×7×20/7×20/7
=400-200 / 7 = 200/7
Stot=16+200/7 =312/7 m