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v=40 m/s
t=1,5 s
kita anggap g=10 m/s ---->percepatan gravitasi
DIT: y maks?
JWB:
Ymaks=40.1,5-1/2.10.1,5²
Ymaks=60-5.2,25
Ymaks=60-11,25
Ymaks=48,75 m dari tanah.