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23 Nov 2019

1.The minute hand on a watch is in length. What is the displacementvector of the tip of the minute hand...
a) From 8:00 to 8:20 a.m.?

b) From 8:00 to 9:00 a.m.?

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Jarrod Robel
Jarrod RobelLv2
30 Sep 2019

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Related textbook solutions

Physics: Principles with Applications
7th Edition, 2013
Giancoli
ISBN: 9780321625922

Related questions

A wall clock has a minute hand with a length of 0.47 m and an hourhand with a length of 0.26 m. Take the center of the clock as theorigin, and use a Cartesian coordinate system with the positive xaxis pointing to 3 o'clock and the positive y axis pointing to 12o'clock. Express the position vectors of the tip of the hour hand() and the tip of the minute hand () at the followingtimes.(determine whether it is positive or negative x , positive ornegative y in each vector
(a) 12:00
=A ( m)

=B ( m)

(b) 3:00
= A( m)

=B ( m)

(c) 6:00
=A ( m)

=B ( m)

(d) 9:00
=A ( m)

=B ( m)

Average Speed of a Highway Vehicle The average speed of a vehicle on a stretch of Route 134 between 6 A.M. and 10 A.M. on a typical weekday is approximated by the function 

  

where f (t) is measured in miles per hour and t is measured in hours, with t = 0 corresponding to 6 A.M.

(a) Compute f'(t)

(b) What is the average speed of a vehicle on that stretch of route 134 at 6:00 AM? 7:00 AM? 8:00 AM?

(c) How fast is the average speed of a vehicle on that stretch of route 134 changing at 6:30 AM? 7:00 AM? 8:00 AM?

 Average Speed of a Highway Vehicle The average speed of a vehicle on a stretch of Route 134 between 6 A.M. and 10 A.M. on a typical weekday is approximated by the function 

 

where f (t) is measured in miles per hour and t is measured in hours, with t = 0 corresponding to 6 A.M.

(a) Compute f'(t)

(b) What is the average speed of a vehicle on that stretch of route 134 at 6:00 AM? 7:00 AM? 8:00 AM?

(c) How fast is the average speed of a vehicle on that stretch of route 134 changing at 6:30 AM? 7:00 AM? 8:00 AM?

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