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barxatty [35]
3 years ago
15

A penny is dropped from the top of a 180m building. How much time will it take to fall to the ground?

Physics
1 answer:
lawyer [7]3 years ago
8 0

Answer:

9.9 seconds

Explanation:

hope this helps :)

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The position of a ball rolling in a straight line is given by x=2−3.6t+4.4t2, where x is in meters and t in seconds.
kobusy [5.1K]
I'm assuming the question is time it will take for ball to reach ground, if it is then set equation to zero then use the quadratic formula, the possible t value is your answer then
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3 years ago
A Heavy crate applied a force of 1500 N on a 25m2 piston. What force needs to be applied on a 0.8m2 piston to lift the crate?
Aleks04 [339]
25/1500 is equal to 0.8/x
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7 0
4 years ago
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DNA is coiled into chromosomes in a cell's
tia_tia [17]

Answer: Cell's nucleus

Explanation :

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3 years ago
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Consider a venturi with a small hole drilled in the side of the throat. This hole is connected via a tube to a closed reservoir.
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Answer:

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Explanation:

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solution:

since outside pressure is atm pressure vaccum can be defined by (P_1-P_2)

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