Problem 2 A project by some to monitor the traffic safety at a busy intersection. They measure (with a precision stopwatch) that exactly three seconds after car B passes through the intersection traveling south at vg = 55 mph, minivan A passes through at va = 70 mph on the road that runs at an angle 0 = 60° east of north. The speed of each automobile is Civil Engineering students requires them constant. VB Determine (a) the relative velocity (in mph) of B with respect to A, draw the vector triangles as part of your answer (b) the change in position (in fi) of B with respect to A during a 10-s interval, (c) the distance (in ft) between the two automobiles 3 s after A has passed through the intersection.

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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Problem 2
A project by some
to monitor the traffc safety at a busy intersection. They measwre
(with a precision stopwatch) that exactly three seconds after car B
passes through the intersection traveling south at vg = 55 mph,
minivan A passes through at va = 70 mph on the road that runs at
an angle 0 = 60° east of north. The speed of each automobile is
Civil Engineering students requires them
constant.
Determine
(a) the relative velocity (in mph) of B with respect to A,
draw the vector triangles as part of your answer
(b) the change in position (in fi) of B with respect to A during a 10-s interval,
(c) the distance (in ft) between the two automobiles 3 s after A has passed through the
intersection.
Transcribed Image Text:Problem 2 A project by some to monitor the traffc safety at a busy intersection. They measwre (with a precision stopwatch) that exactly three seconds after car B passes through the intersection traveling south at vg = 55 mph, minivan A passes through at va = 70 mph on the road that runs at an angle 0 = 60° east of north. The speed of each automobile is Civil Engineering students requires them constant. Determine (a) the relative velocity (in mph) of B with respect to A, draw the vector triangles as part of your answer (b) the change in position (in fi) of B with respect to A during a 10-s interval, (c) the distance (in ft) between the two automobiles 3 s after A has passed through the intersection.
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