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Dafna11 [192]
3 years ago
15

Describe the shapes and designs that are most aerodynamic.

Physics
2 answers:
Ierofanga [76]3 years ago
8 0

Answer: The teardrop could be an example as it was designed for that purpose, and most notably planes and such aero traveling vehicles

Explanation:

:) :) :) :):): )

Bas_tet [7]3 years ago
4 0
The teardrop could be an example as it was designed for that purpose, and most notably planes and such aero traveling vehicles
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A downhill skier was able to move 560 meters in 25 seconds. What is the skier’s average speed? (Round your answer to the nearest
anastassius [24]
The average speed of a moving body is given by:
average speed = total distance / total time
average speed = 560 / 25
22.4 meters per second

The skier is traveling at an average velocity of 22.4 meters per second.
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In order for electrical current to flow through a solid, _____. the solid must have electrons the electrons in the solid must be
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What centripetal force is needed to keep a 7kg mass moving in a circle of 4 meters radius at 15m/s
liq [111]

Answer:

We conclude that the centripetal force needed to keep a 7kg mass moving in a circle of 4 meters radius at 15m/s is 393.75 N.

Explanation:

Given

  • Mass m = 7 kg
  • Radius r = 4 m
  • Velocity v = 15m/s

To determine

We need to determine the centripetal force needed to keep a 7kg mass moving in a circle of 4 meters radius at 15m/s.

We know a centripetal force acts on a body to keep it moving along a curved path.

We can determine the centripetal force using the formula

F_c=\frac{mv^2}{r}

where

  • m is the mass
  • v is the velocity
  • r is the radius
  • F_c is the centripetal force

substitute m = 7, r = 4, and v = 15 in the formula

F_c=\frac{mv^2}{r}

F_c=\frac{7\left(15\right)^2}{4}

F_c=\frac{1575}{4}

F_c=393.75 N

Therefore, we conclude that the centripetal force needed to keep a 7kg mass moving in a circle of 4 meters radius at 15m/s is 393.75 N.

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