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Svetlanka [38]
3 years ago
13

An airplane travels at a speed of 300 km/h for 2 hours, speeds up to 400 km/h for the next hour and then travels the final four

hours at a speed of 500 km/h. What is the average speed of the plane for this trip?​
Physics
1 answer:
babymother [125]3 years ago
4 0

Answer:

WOW HOW ### #### #####

Explanation:

### g### H##

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INTEGRATED SCIENCE-8th grade science <br> Please help report cards are due for me at dec.18
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Answer:

Our drinking water comes from lakes, rivers and groundwater. For most Americans, the water then flows from intake points to a treatment plant, a storage tank, and then to our houses through various pipe systems. A typical water treatment process.

Explanation:

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B. Study the given figure and calculate the area of the leaf
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Answer:

19 cm sq

Explanation:

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A train is moving in the positive direction down a track. First the train speeds up, and then it slows down. What is its acceler
tatuchka [14]
C.

The train first sped up, giving it a positive acceleration in the beginning. This eliminates D since that choice states that it begins with a negative acceleration. This also eliminates B since that choice states that the train only had a negation acceleration.

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8 0
3 years ago
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A woman standing on the ground sees a rocket ship move past her at 95% the speed of light. Compared to the rocket at rest, the w
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As per Einstein's theory of relativity we know that when an object will move with the speed comparable to the speed of light then the length of the object will be different from its length at rest position

This is also known as length contraction theory

As we know here that

L = L_0\sqrt{1 - \frac{v^2}{c^2}}

so here we know that

v = 0.95 c

so from above equation we will have

L = L_0\sqrt{1 - 0.95^2}

L = 0.31 L_0

so here the length will be SHORTER

8 0
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a ball is launched upward at an angle from the ground. which way does its acceleration point at the top?
yawa3891 [41]

Answer:

it's acceleration points tangentially to its trajectory in the direction of its motion at the top.

cause only it's horizontal velocity acts at the top. and it will be horizontal in the direction of it's motion.

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3 years ago
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