A running back (86.5 kg) is racing east at 7.70 m/s. A 187.4 kg linebacker tackles him moving north at a speed of 5.30 m/s.. For a brief, bone-crunching instant, time seems to stand still as they sail through the air together at a velocity vy, directed at an angle e that is north of east. Find: 8 (a) the angle 9 (b) the speed vy, before the ground slows them down. m/s
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