A grenade (mass = 3 kg), moving horizontally at 60 m/s, explodes into two fragments with masses m1 = 1 kg and m2 = 2 kg. The first fragment, m1, is ejected upwards at an angle of 37º with the horizontal, and the second fragment, m2, is ejected downwards at an angle of 45º. 1. Make a diagram drawing the momentum vectors of the system before and after the explosion. What magnitude is conserved? Write the corresponding vector expression.  2. Find the magnitude of the velocity of the first and second fragments.

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