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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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The world's fastest production sportscar has a top speed of 415 kmh-1(a)Convert this speed to ms-1.[ 1](b)The distance from Lond
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Answer:

(a). The speed is 115.28 m/s.

(b). The time is 94 min.

(c). The International Space Station travels 43202.400 km.

(d). Speed is scalar quantity.

Velocity is vector quantity.

Explanation:

Given that,

Top speed = 415 km/h

1 miles = 1609 m

(a). We need to calculate the speed in m/s

Using conversion of km/h to m/s

v=415\ km/h

v=415\times\dfrac{5}{18}

v=115.28\ m/s

(b). We need to calculate the distance from London to Edinburgh in km

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d=403\ miles

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d=648.427\ km

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t=\dfrac{648.427}{415}

t=1.56\ h

t=1\ hours 34\ min

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(d). Speed :

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Velocity :

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is dimensionally correct relation necessarily to be a correct physical relation? explain with example.​
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Answer: hope it helps you...❤❤❤❤

Explanation: If your values have dimensions like time, length, temperature, etc, then if the dimensions are not the same then the values are not the same. So a “dimensionally wrong equation” is always false and cannot represent a correct physical relation.

No, not necessarily.

For instance, Newton’s 2nd law is  F=p˙ , or the sum of the applied forces on a body is equal to its time rate of change of its momentum. This is dimensionally correct, and a correct physical relation. It’s fine.

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