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PLEASE help me solve this question! No nonsense answers, and attach full solutions please!

PLEASE help me solve this question No nonsense answers and attach full solutions please class=

Respuesta :

Answer:

6.4 seconds

Step-by-step explanation:

Using the second equation of motion.

d= 200m/s.

a= 9.8ms^-1 . Acceleration due to gravity.

t= time.

substituting,

t=

[tex] \sqrt{2 \times \frac{200}{9.8} } [/tex]

t= 6.4 seconds