Answer :

Final answer:

The ball is going at a speed of approximately 18.9 m/s when it hits the ground.


Explanation:

The equation to calculate the final velocity of a falling object is:

v = sqrt(2 × g × h)

Where v is the final velocity, g is the acceleration due to gravity (approximately 9.8 m/s^2), and h is the height from which the object was dropped.

Plugging in the values from the question:

v = sqrt(2 × 9.8 × 17.2) ≈ 18.9 m/s

Therefore, when the ball hits the ground, it is going at a speed of approximately 18.9 m/s.


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