A piece of wood weighing 160 lb is pushed from the top of a plane slide which is 50 feet long and inclined 30° to the horizontal. Air resistance (in pounds) is numerically equal to the velocity (in feet per second), the coefficient of friction is 0.5, and the wood starts sliding with initial velocity 8 ft/sec. A) How fast is the wood moving 1.5 seconds after it starts sliding? B) How far has it slid 1.5 seconds after it starts sliding? C) How long will it take for the wood to reach the bottom of the slide?
A piece of wood weighing 160 lb is pushed from the top of a plane slide which is 50 feet long and inclined 30° to the horizontal. Air resistance (in pounds) is numerically equal to the velocity (in feet per second), the coefficient of friction is 0.5, and the wood starts sliding with initial velocity 8 ft/sec. A) How fast is the wood moving 1.5 seconds after it starts sliding? B) How far has it slid 1.5 seconds after it starts sliding? C) How long will it take for the wood to reach the bottom of the slide?
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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A piece of wood weighing 160 lb is pushed from the top of a plane slide which is 50 feet
long and inclined 30° to the horizontal. Air resistance (in pounds) is numerically equal to the velocity (in feet per second), the coefficient of friction is 0.5, and the wood starts sliding with
initial velocity 8 ft/sec.
A) How fast is the wood moving 1.5 seconds after it starts sliding?
B) How far has it slid 1.5 seconds after it starts sliding?
C) How long will it take for the wood to reach the bottom of the slide?
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