Meowkitty8079 Meowkitty8079
  • 05-02-2020
  • Mathematics
contestada

A ball is thrown 178 m upward and then falls back to earth. Neglecting air resistance, how long will it be in the air? The acceleration of gravity is 9.8 m/s 2 .

Respuesta :

Eduard22sly
Eduard22sly Eduard22sly
  • 06-02-2020

Answer: 12.06secs

Step-by-step explanation:

T = 2t

t = sqrt (2H/g)

H = 178 m

g = 9.8m/s2

t = sqrt (2H/g) = t = sqrt (2x178/9.8)

t = 6.03sec

T = 2t = 2 x 6.03 = 12.06secs

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