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A ball is thrown vertically upward from top of a building with speed of 20m/s. On the way back ball misses the building and lands on the ground.

Total time the ball is in air is 6 seconds. Determine the height of the building.

  • phusics -

    hf=hi+vi*t-4.9t^2 you are given hf as zero, vi as 20, and t is 6. Solve the equation for hi

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