Question

Ayudaaaaaaaaaaaaaa por favor

Answer 1

Respuesta:

Explicación:

1)

Vo=0

t = 5 seg

h=?

vf=?

g = 9.8 m/s²

h = vot + 0.5 gt²

h = 0.5 gt²

h = 0.5 x 9.8 m/s² (5 seg)²

h = 122.5 m

vf = vo + gt

vf = gt

vf = 9.8 m/s² x 5 seg

vf = 49 m/s

2)

vo=0

h = 120m

t=?

vf=?

g = 9.8 m/s²

vf² = vo² + 2gh

vf² = 2gh

vf² = 2x 9.8 m/s² x 120 m

vf² = 2352 m²/s²

√vf² = √2352 m²/s²

vf = 48.49 m/s

      vf - vo        48.49 m/s - 0

t = ------------- = --------------------- = 4.94 seg

        g                9.8 m/s²