College Physics
College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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A radar station detects an incoming missile. At first contact, the missile is found to be a
distance d = 57.5 miles away from the radar dish, at an angle of θ = 30.0 ̊ from the horizon.
After 2.50 seconds, the missile is detected a distance d = 17.5 miles away from the radar
dish, at an angle of θ = 70.0 ̊ from the horizon.
(a) Calculate the average velocity of the missile
during this time in Cartesian form (x and y
components). Use a coordinate system where
the +x direction is to the right, the +y direction
is up, and the origin is at the location of the
satellite dish. Give your answer in units of
miles per second.  

d
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Transcribed Image Text:d
Expert Solution
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Step 1

In cartesian coordinates, the position of missile in 1st instant:

x1=d1cosθ1=57.5cos30o=49.796 milesy1=d1sinθ1=57.5sin30o=28.75 miles

 

And the position of missile after 2.5 seconds,

x2=d2cosθ2=17.5cos70o=5.985 milesy2=d2sinθ2=17.5sin70o=16.445 miles

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