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skelet666 [1.2K]
2 years ago
11

Sally and Juan’s science teacher has directed the class to build a paper airplane. The challenge is to build an airplane that fl

ies the farthest distance. The students have two days to design and test their planes. The assignment will end with a “fly-off”. Sally and Juan built their first plane. Whenever they tested the plane, it would take a nose dive into the floor. They changed the design by reshaping the nose of the plane and adding some weight to the tail. The plane flew, but did not get very far. Next they tried to change the way they threw the plane. After many tries, their plane flew an average distance of 35 meters. Sally and Juan's trial and error airplane design could be described as ___________________ in the technological design process.
A) evaluating a solution
B) identifying a problem
C) communicating results
D) implementing a design
Physics
2 answers:
devlian [24]2 years ago
8 0
Evaluating a solution
Sveta_85 [38]2 years ago
6 0

Answer:

A) evaluating a solution

Explanation:

When we try to produce a technological project many problems and difficulties can occur. These problems can hamper the success of the project and turn all dedication into failure. For this reason, it is important for researchers to be quick to identify problems and solve them.

An example of this can be seen in the question above, where Sally and Juan are trying to solve the problem of their planes. They do not know what is causing the problem and are therefore evaluating a solution, in order to continue the project.

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tatuchka [14]
You understand the concepts all perfectly fine, just have applied them slightly incorrectly.
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3 years ago
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The distance between the centers of the wheels of a motorcycle is 156 cm. The center of mass of the motorcycle, including the ri
Drupady [299]

Answer:

a = 9.86 m/s²

Explanation:

given,

distance between the centers of wheel = 156 cm

center of mass of motorcycle including rider = 77.5 cm

horizontal acceleration of motor cycle = ?

now,

The moment created by the wheels must equal the moment created by gravity.

take moment about wheel as it touches the ground, here we will take horizontal distance between them.

then, take the moment around the center of mass. Since the force on the ground from the wheels is horizontal, we need the vertical distance.

now equating both the moment

m g d = F h

d is the horizontal distance

h is the vertical distance

m g d = m a h

term of mass get eliminated

g d = a h

so,

a = \dfrac{g\ d}{h}

a = \dfrac{9.8\times 0.78}{0.775}

a = 9.86 m/s²

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2 years ago
Unless otherwise authorized, the maximum indicated airspeed at which aircraft may be flown when at or below 2,500 feet AGL and w
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Answer: 200 knots

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How do forest fires affect the Earth's atmosphere?
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It is B because the other ones are good.

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