A63.3-kg basketball player jumps vertically and leaves the floor with a velocity of 1.71 m/s upward. (a) what impulse does the player experience? magnitude 108 correct: your answer is correct. n · s direction correct: your answer is correct. (b) what force does the floor exert on the player before the jump? magnitude 620 correct: your answer is correct. n direction correct: your answer is correct. (c) what is the total average force exerted by the floor on the player if the player is in contact with the floor for 0.450 s during the jump? magnitude 348 incorrect: your answer is incorrect. your response differs from the correct answer by more than 10%. double check your calculations. n direction correct: your answer is correct.