A Boeing 747 airliner which weighs 802,000 lb taxis down a runway andreaches a velocity of 75.0 mi/h. The airplane starts from rest, and its enginescan deliver 175,000 lb of thrust.(a) Find the plane's mass.(b) Find its momentum.(c) Find its change in momentum.(d) In order to reach this velocity, what impulse was delivered to the plane?(e) How long did the plane take to reach its speed? (Assume that the thrust ofthe engines remains constant and ignore air resistance.)

W=802000 lb since 1lb=0.453 kgW=802000×0.453W=363306×9.81 kgW=3.564MNFT=175000×.453×9.81 NFT=7.778…

A Boeing 747 airliner which weighs 802,000 lb taxis down a runway and reaches a velocity of 75.0 mi/h. The airplane starts from rest, and its engines can deliver 175,000 lb of thrust. (a) Find the plane's mass. (b) Find its momentum. (c) Find its change in momentum.

A Boeing 747 airliner which weighs 802,000 lb taxis down a runway and reaches a velocity of 75.0 mi/h. The airplane starts from rest, and its engines can deliver 175,000 lb of thrust. (a) Find the plane's mass. (b) Find its momentum. (c) Find its change in momentum.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Conservation of Energy

In physics, the rule of the conservation of energy states that energy doesn’t disappear from the atmosphere; instead, it changes its form from one type to another. Energy is one of the most important physical quantities in nature, and it cannot be created or destroyed — only transformed.

Question

A Boeing 747 airliner which weighs 802,000 lb taxis down a runway and
reaches a velocity of 75.0 mi/h. The airplane starts from rest, and its engines
can deliver 175,000 lb of thrust.
(a) Find the plane's mass.
(b) Find its momentum.
(c) Find its change in momentum.
(d) In order to reach this velocity, what impulse was delivered to the plane?
(e) How long did the plane take to reach its speed? (Assume that the thrust of
the engines remains constant and ignore air resistance.)

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