Nathan plays middle linebacker for South's varsity football team. In a game against cross-town rival North, he delivered a hit to North's 82-kg running back Ryan, changing his eastward velocity of 5.6 m/s into a westward velocity of 2.5 m/s. What is the change in Ryan's momentum? (1 point) Responses 254.2 kg m/s 254.2 kg m/s 3.1 kg m/s 3.1 kg m/s 212.5 kg m/s 212.5 kg m/s 459.2 kg m/s 459.2 kg m/s 671 kg m/s

1 answer

To find the change in momentum, we need to calculate the final momentum minus the initial momentum.

Initial momentum = mass * initial velocity = 82 kg * 5.6 m/s = 459.2 kg m/s
Final momentum = mass * final velocity = 82 kg * (-2.5 m/s) = -205 kg m/s

Change in momentum = Final momentum - Initial momentum = -205 kg m/s - 459.2 kg m/s = -664.2 kg m/s

Therefore, the change in Ryan's momentum is -664.2 kg m/s.