An 81.8 kg jogger is heading due east at a speed of 1.81 m/s. A 54.4 kg jogger is heading 32.2° north of east at a speed of 3.00 m/s. Calculate the magnitude of the sum of the momenta of the two joggers.
m1v1 + m2v2 = m1v1' + m2v2'
The Attempt at a Solution
Since they want the sum of the momenta I figured it meant that I would just add up the masses and the velocities as follows:
(81.8)(1.81) + (54.4)(3.00)
However, that was not the correct answer. Also the angle is throwing me off a bit as I don't see how it could fit into this problem. Any help will be greatly appreciated. Thanks.