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If the ball reaches the ground in 8 seconds and the velocity of the ball before it hits the ground is 78.4. What is its acceleration?
also please explain how if you can

If the ball reaches the ground in 8 seconds and the velocity of the ball before it hits the ground is 784 What is its acceleration also please explain how if yo class=

Respuesta :

Answer:

9.8 m / s^2

Explanation:

Assuming free fall====> there is no initial downward/upward velocity

  Assuming metric units   78.4  m/s

 vf = a t

 78.4 = a (8)     shows     a = 9.8 m/s^2