3 years ago

A plane moves at 15 km/h for a total distance of 300km. How long did it fly for? *

Physics

1 answer:

strojnjashka [21]3 years ago

5 0

20 hours you do 300 divided by 15 and get 20 hours

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During take-off a 5kg model rocket, initially at rest, burns fuel for 4.6s causing its speed to increase from rest to 39m/s duri

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Answer:

The height is "89.61 m". A further explanation is given below.

Explanation:

According to the question,

Mass of rocket,

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Time,

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So,

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⇒ $Thrust-(5\times 9.8)-60=42.89$

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⇒ $Thrust-109=42.89$

⇒ $Thrust=42.89+109$

⇒ $Thrust=151.89 \ N$

The height will be:

⇒ $h=\frac{1}{2} at^2$

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$=\frac{1}{2}\times 8.47\times 21.16$

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