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laiz [17]
3 years ago
11

The amount of force needed to keep a 0.5 kg football moving at a constant speed of 8 m/s

Physics
1 answer:
Mice21 [21]3 years ago
3 0

Answer:

0 N

Explanation:

The football is moving at constant speed, so it's not accelerating.

∑F = ma

F = (0.5 kg) (0 m/s²)

F = 0 N

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A weatherman carried an aneroid barometer from the ground floor to his office atop the Sears Tower in Chicago. On the level grou
Sophie [7]

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442.36038 m or 1451.31362 ft

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P_1 = Initial pressure = 30.15 inHg

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1\ m=3.28084\ ft

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Difference in pressure is given by

P_1-P_2=\rho gh\\\Rightarrow h=\frac{P_1-P_2}{\rho g}\\\Rightarrow h=\frac{(30.15-28.607)\times 13560\times 0.0254\times 9.81}{0.075\times 16.0185\times 9.81}\\\Rightarrow h=442.36038\ m\\\Rightarrow h=442.36038\times 3.28084\\\Rightarrow h=1451.31362\ ft

The height of the building is 442.36038 m or 1451.31362 ft

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3 years ago
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Answer:

Explanation:

Usually the angle between the y axis  and x axis is 90° and we know that for furthest travel the degree angle must be 45° with the horizontal, Mo must release the ball about halfway between straight ahead and straight up

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3 years ago
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