Question

A heavy object is dropped from a vertical height of 8.0 m. What is its speed when it hits the ground?​

Answer 1

Answer:

it's speed is 9.4

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Answer 2

Answer:

Your initial velocity in this case is 0 m/s. You need to determine the final velocity. So all you need to do is use the kinematic equation

vf^2 = vi^2 + 2ad (2 x acceleration x displacement).

so after subbing in all your variables, 0 for vi, 9.8 for acceleration, and 8 for displacement, you end up with a final velocity of 12.52m/s.

Explanation:

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