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Dennis_Churaev [7]
3 years ago
11

You might have noticed that a feather falls slowly toward the ground, while a ball falls rapidly. Which statement correctly expl

ains the motion of these objects?
1. The ball does not experience fluid friction as it falls.
2. Gravity is the only force acting on the feather and the ball.
3.The acceleration of the ball and feather are the same.
4. The feather experiences more fluid friction than the ball.
Physics
1 answer:
Brut [27]3 years ago
3 0

Answer:

4. the feather experiences more fluid friction than the ball

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State one advantage and disadvantage of friction
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Answer:

  1. Advantage: Helps us to walk without slipping.
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Disadvantage:

  1. We slip on a wet floor.
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5 0
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What changes occurred when Zoroastrianism became a state religion during the Sasanian Empire?
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8 0
3 years ago
The world record for the 100.0 meter dash is 9.580 seconds. Find the speed of the runner in miles per hour.
grigory [225]

Answer:

233.1 miles per hours

Explanation:

Speed: This is defined as the ratio of distance to time. The S.I unit of speed is m/s. speed is a vector quantity because it can only be represented by magnitude only. Mathematically, speed can be expressed as,

S = d/t ....................... Equation 1

Where S = speed of the runner, d = distance covered, t = time.

Given: d = 100 meter , t = 9.580 seconds

Conversion:

If, 1 meter =  0.00062 miles

Then, 100 meters = (0.00062×100) miles = 0.62 miles.

Also

If, 3600 s = 1 h

Then, 9.580 s = (1×9.580)/3600 = 0.00266 hours.

Substitute into equation 1

S = 0.62/0.00266

S = 233.1 miles per hours.

Hence the runner speed is 233.1 miles per hours

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You have a meteorite sample and you decide to use the uranium-235/lead-207 system to date it. After analysis, you find that it h
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Originally there must been

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