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Shalnov [3]
3 years ago
10

The position of a certain airplane during takeoff is given by x=1/2 *bt2, where b = 2.0 m/s2 and t = 0 corresponds to the instan

t at which the airplane's brakes are released at position x = 0. The empty but fueled airplane has an inertia of 35,000 kg, and the 160 people on board have an average inertia of65 kg.
What is the magnitude of the airplane's momentum 15s after the brakes are released?
Physics
1 answer:
Serhud [2]3 years ago
5 0

Answer:

1362000 kgm/s

Explanation:

So the total mass combination of the plane and the people inside it is

M = 35000 + 160*65 = 45400 kg

After 15 seconds at an acceleration of 2 m/s2, the plane speed would be

V = 2*15 = 30 m/s

So the magnitude of the plane 15s after brakes are released is

MV = 45400 * 30 = 1362000 kgm/s

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How many meters are in 32 kilometers
lukranit [14]

Answer:

32,000 m

Explanation:

Conversion

1km ===> 1000m

32km===>x

x = (32 × 1000) ÷ 1

5 0
3 years ago
"In this lesson, you learned about renewable energy resources and nonrenewable energy resources. Think about the resources discu
Nutka1998 [239]
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5 0
3 years ago
What is Pressure ? Explain well
Andreyy89







Hi Pupil Here's Your Answer ::





➡➡➡➡➡➡➡➡➡➡➡➡➡





Pressure is defined as the force acting perpendicular on an unit area of the surface.


OR


The thrust per unit area is called Pressure.

let us see, on what factors the pressure depends?


Take a pin having a pointed end and a nail having blunt end. Press then against a cardboard by applying the same force. We find that the pin penetrates deep into the cardboard then the nail. In this case, force acting on two points of the cardboard is same but the area under the tip of the Pin is less than under the tip of the nail.

The effect of the forces of the scene magnitudes on the different area is different.


Conclusions : Pressure acting on the surface is inversely proportional to the area of the surface on which force acts.





⬅⬅⬅⬅⬅⬅⬅⬅⬅⬅⬅⬅⬅





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4 0
3 years ago
A teacher applles a force to a wall and becomes axhausted.<br> Explanation:
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Because they are using all of there energy to apply the force

Hope this helps — xoxo
3 0
3 years ago
You are making raised beds for a productive vegetable garden and have 4 boxes that are 1m x 2m x 1m deep. What volume of dirt (i
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Answer:

8 m³

282.3 ft³

Explanation:

The volume of each box is width times length times depth:

V = (1 m) (2 m) (1 m)

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Converting to cubic feet:

8 m³ × (3.28 ft / m)³

= 282.3 ft³

5 0
3 years ago
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