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2 years ago

14

Ariel dropped a golf ball from her second story window. The ball starts from rest and hits the sidewalk 3.5 s later with a veloc

ity of 14.7 m/s. Find the average acceleration of the golf ball.

1 answer:

Aleks [24]2 years ago

4 0

Answer:

By using the acceleration formula,

$a = \frac{v - u}{t}$

$a = \frac{14.7 - 0}{3.5}$

$a = 4.2m \: s ^{ - 2}$

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Answer:

The young tree, originally bent, has been brought into the vertical position by adjusting the three guy-wire tensions to AB = 7 lb, AC = 8 lb, and AD = 10 lb. Determine the force and moment reactions at the trunk base point O. Neglect the weight of the tree.

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What visible signs indicate a precipitation reaction when two solutions are mixed?

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Formation of an insoluble solid

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2 years ago

When the voltage and current have _____ polarities in a pure capacitive circuit, the capacitor is discharging and the energy is

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You have been abducted by aliens and find yourself on a strange planet. Fortunately, you have a meter stick with you. You observ

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Answer:

$36.4276\ m/s^2$

Explanation:

m = Mass of stick

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Time period is given by

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Moment of inertia is given by

$I=m\dfrac{L^2}{3}$

$T=2\pi\sqrt{\dfrac{m\dfrac{L^2}{3}}{mgh}}\\\Rightarrow T=2\pi\sqrt{\dfrac{L^2}{3gh}}\\\Rightarrow g=\dfrac{4\pi^2L^2}{3hT^2}\\\Rightarrow g=\dfrac{4\pi^2\times 1^2}{3\times 0.5\times 0.85^2}\\\Rightarrow g=36.4276\ m/s^2$

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