If you drop a steel metal ball off a building and it takes 3 seconds to hit the ground, how tall is the building?

Explanation:

We can use kinematics equation to solve this problem. Because the metal ball's initial velocity was 0, .

Therefore, our equation becomes:

(freefall equation).

is given as 3 seconds and is acceleration due to gravity ().

Therefore, our answer is:

(one significant figure).

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