.. 2.9 A plane lands with a velocity of 325 ft/s. If it needs to stop in a distance of 9500 ft, what acceleration must the brakes apply to the plane? How much time will it take for the plane to stop?

College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Question 2.9 only
blem asking you to find?
(c) Express the information contained in this Problem and the information that
it asks for in mathematical statements. (We highly recommend converting
the units of miles per hour into ft/s at this point in the Problem. Unit
conversions are always easier at the beginning of a Problem than in the
midst of the calculation.)
col
Prob
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the i
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(d) What equation should you use to answer this Problem?
(e) Use this equation to calculate the velocity the car reaches.
(f) Check your answer's reasonability by placing the answer back into the orje.
inal equation.
In a
name
(g) Check your answer's reasonability by using a different solution method.
kg m
.. 2.9 A plane lands with a velocity of 325 ft/s. If it needs to stop in a distance of
9500 ft, what acceleration must the brakes apply to the plane? How much time
will it take for the plane to stop?
trave
caref
2.
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2.10 A pitcher throws a baseball at a velocity of 75.0 miles per hour. Suppose
that the batter swings the bat such that it exerts a constant acceleration on the
baseball, sending it back in the exact opposite direction. Suppose also that the
bat remains in contact with the ball for 0.022s and that the bat pushes the
ball over a distance of 2.5 inches. What is the acceleration of the ball during its
contact with the bat and at what velocity does it leave the bat?
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does
... 2
ft aw
... 2.11 A monorail car needs to travel a total of 2000 ft between stations, and
has a maximum safe acceleration of magnitude 4.2 ft/s2. Naturally, it needs to
leave the previous station at rest and arrive at the next station at rest. If the car
spends equal amounts of time increasing its velocity and decreasing its velocit.
how much time does it take for the car to travel between stations? (Hint: 10
will need to divide this problem into two parts: One for the car having a posia
Does
answ
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7A
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Transcribed Image Text:blem asking you to find? (c) Express the information contained in this Problem and the information that it asks for in mathematical statements. (We highly recommend converting the units of miles per hour into ft/s at this point in the Problem. Unit conversions are always easier at the beginning of a Problem than in the midst of the calculation.) col Prob part the i 2. collic relate (d) What equation should you use to answer this Problem? (e) Use this equation to calculate the velocity the car reaches. (f) Check your answer's reasonability by placing the answer back into the orje. inal equation. In a name (g) Check your answer's reasonability by using a different solution method. kg m .. 2.9 A plane lands with a velocity of 325 ft/s. If it needs to stop in a distance of 9500 ft, what acceleration must the brakes apply to the plane? How much time will it take for the plane to stop? trave caref 2. 550 - 2.10 A pitcher throws a baseball at a velocity of 75.0 miles per hour. Suppose that the batter swings the bat such that it exerts a constant acceleration on the baseball, sending it back in the exact opposite direction. Suppose also that the bat remains in contact with the ball for 0.022s and that the bat pushes the ball over a distance of 2.5 inches. What is the acceleration of the ball during its contact with the bat and at what velocity does it leave the bat? vehic does ... 2 ft aw ... 2.11 A monorail car needs to travel a total of 2000 ft between stations, and has a maximum safe acceleration of magnitude 4.2 ft/s2. Naturally, it needs to leave the previous station at rest and arrive at the next station at rest. If the car spends equal amounts of time increasing its velocity and decreasing its velocit. how much time does it take for the car to travel between stations? (Hint: 10 will need to divide this problem into two parts: One for the car having a posia Does answ ft and 7A variab power
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