For the following calculation, ignore air resistance Do not round your answer. Write the answer exactly as it is. An object falls from rest and strikes the ground 19 seconds later. The object's initial height was __ meters.

Question

Gabriel

Physics

19 August, 02:21

For the following calculation, ignore air resistance Do not round your answer. Write the answer exactly as it is. An object falls from rest and strikes the ground 19 seconds later. The object's initial height was __ meters.

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Emelia Strickland · Answer 1

We study the origin of the Ox axis on the ground. The body motion law is x = h-gt² / 2. When the body reaches the ground x = 0 = > h=gt²/2=10*19²/2=5*361=1805 m