1. The problem statement, all variables and given/known data A rubber ball (mass 0.26 kg) is dropped from a height of 1.7 m onto the floor. Just after bouncing from the floor, the ball has a speed of 3.6 m/s. (a) What is the magnitude and direction of the impulse imparted by the floor to the ball? Magnitude ? kg · m/s (b) If the average force of the floor on the ball is 17 N, how long is the ball in contact with the floor? 2. Relevant equations dp=Fdt=m(vf-vi) 3. The attempt at a solution a)the unknown is the initial speed of the dropping ball under free fall: vi= sqrt (2 x 9.8 x 1.7) = 5.8 delta p= 0.26 (3.6--5.8)=2.4 b) dt=dp/Fave=0.14 s Please let me know what is wrong here, my electronic assignment system is telling me the numbers are wrong. Thank you!