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Verified answer
B.jarak maksimum yg dicapai peluruvo = 40 m/s
h = vo sin α t - ½gt²
tp = -b/2a
= -vo sin α / 2.(-½g)
= vo sin α / g
= 40 sin 60 / 10
= 40.½√3 / 10
= 2√3 s
a) h max = vo sin α. tp - ½g tp²
= 40 sin 60. 2√3 - ½.10.(2√3)²
= 40.½√3.2√3 - ½.10.4.3
= 120 - 60
= 60m
b) x max = vo cos α. 2tp
= 40. Cos 60. 2.2√3
= 40.½.4√3
= 80√3 m
c) lama diudara = 2tp
= 2.2√3
= 4√3 s