A 1.2 kg object travels with constant velocity (4i - 2j) m/s. When the object is at the point (0
m, 9 m, 0 m), what is the magnitude of its angular momentum about the origin?
p = m*v
L = r*p
The Attempt at a Solution
v = sqrt(4^2 + 2^2)
p = m*v = 5.36
L = r*p = 9*5.36 = 48.2
Interestingly the answer I get this way is 2x the right answer. I wonder if this is a coincidence of not. Not sure how to do it the 'right' way.