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Andrei [34K]
3 years ago
15

A passenger jet flies from one airport to another 1273 miles away in 2.7 h. Find its average speed.​

Physics
1 answer:
AnnZ [28]3 years ago
3 0

Answer:

Average speed of passenger jet

s = 471.48\ mi/hr

Explanation:

Let s be the average speed of the passenger jet.

Given:

Distance from one airport to another airport d = 1273\ mi

Total time taken t = 2.7\ hr

We need to find the average speed of the passenger jet.

Solution:

Average speed formula:

The ratio of the total distance travelled by the object to the time taken to cover that distance.

Average\ speed = \frac{Total\ distance\ travelled}{Total\ time\ taken}

s = \frac{d}{t}

Substitute total distance and time value in above equation.

s = \frac{1273}{2.7}

s = 471.48\ mi/hr

Therefore, the average speed of the passenger jet is s = 471.48\ mi/hr.

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anygoal [31]

Answer:

no picture or anything so cant anwser

Explanation:

8 0
3 years ago
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When an object moves, stops moving, changes speed, or changes direction, how do scientists describe that condition?
lorasvet [3.4K]
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You can also drop "stops moving", because that's included in "changes speed"
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When an object changes speed or changes direction, that's called "acceleration".

I dropped the first one from the list, because an object can be moving,
and as long as it's speed is constant and it's moving in a straight line,
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I think you meant to say "starts moving". That's a change of speed (from zero
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8 0
2 years ago
Will Mark Brainliest if Correct PLZ!!!!! A bullet is shot at some angle above the horizontal at an initial velocity of 87m/s on
qaws [65]

Answer:

≅50°

Explanation:

We have a bullet flying through the air with only gravity pulling it down, so let's use one of our kinematic equations:

Δx=V₀t+at²/2

And since we're using Δx, V₀ should really be the initial velocity in the x-direction. So:

Δx=(V₀cosθ)t+at²/2

Now luckily we are given everything we need to solve (or you found the info before posting here):

  • Δx=760 m
  • V₀=87 m/s
  • t=13.6 s
  • a=g=-9.8 m/s²; however, at 760 m, the acceleration of the bullet is 0 because it has already hit the ground at this point!

With that we can plug the values in to get:

760=(87)(cos\theta )(13.6)+\frac{(0)(13.6^{2}) }{2}

760=(1183.2)(cos\theta)

cos\theta=\frac{760}{1183.2}

\theta=cos^{-1}(\frac{760}{1183.2})\approx50^{o}

3 0
3 years ago
In 3-5 sentences, explain the difference between mass and weight and summarize how mass and weight are related to gravitational
earnstyle [38]
Bruh..........................
5 0
3 years ago
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Calculate the root mean square velocity of nitrogen molecules at 25 C.
iragen [17]
 root mean square<span>= square root of ( 3RT/M) 

 R = 8.314 J/K/mole 
T = 25 + 273 = 298 K 
M = molecular mas of N2 in kg = 28 X 10^-3 kg 

put values... 

</span><span> root mean square</span> = square root of ( 3 X 8.314 X 298/28 X 10^-3)
= square root of ( 265454.143)
= 515.2 m/s
so option A is right
hope this helps
4 0
2 years ago
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