3. In lab this week, you took data on the force plates, landing with soft knees and stiff knees. Let's analyze this a little bit more in terms of impulse. a) The jumping student Terry has a velocity of -3 m/s just before landing, and 0 m/s after landing. If their mass is 55 kg, what is their change in momentum? b) When Terry lands with stiff knees, their collision with the earth lasts for . 16 s. What is their average force in this case? c) When Terry lands with soft knees, their collision with the earth last for .46 s. What is their average force in this case