Question

9. If a brick fall down from top of the building in 4 sec
then the height of that building is __ mit.
a) 72.2 b) 74.8 c) 78.4 d) 64.8
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Answer 1

Answer:

s=ut+1/2at²

s=1/2*9.8*4*4=78.4

Answer 2

Explanation:

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