Posted by Lindsay on Friday, December 23, 2011 at 1:23pm.
An airplane of mass 2180 kg located 131 km north of U is
ying
272 km/hr in an easterly direction.
(a) What is the magnitude of the angular momentum (kg m2/s) with respect to U?
(b)what is the angular momentum with respect to U?

Physics  drwls, Friday, December 23, 2011 at 9:01pm
Angular momentum is M*V*R, since V is perpendicular to the R vector.
Convert V to m/s and R to meters before multiplying.
Except for including the direction of angular momentum, your two questions are the same. Get it from the cross product VxR and the righthand rule
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