Question

Mohon jawaban beserta caranya kak...

Answer 1

G = 10 m/s²
v₀ = 0,8 m/s
h = 25 m

  h = v₀.t + (1/2).g.t²
25 = 0,8t + 5t²
  0 = 5t² + 0,8t - 25
 
t = (-0,8 + √0,64+500)/(2.5) ← hitung nilai t positif aja
  = (-0,8 + √500,64)/10
  = 2,1575 s

v² = v₀² + 2gh
v² = 0,64 + 500
v² = 500,64
v = 22,375 m/s