A 0.140 kg basketball is thrown with a velocity of 40.5 m/s. It is struck with an average force of 5000.0 N, which results in a velocity of 37.0 m/a in the opposite direction. How long were the bat and ball in contact? A: 2.17 x 10^-3s B: 3.72 x 10^-2s C: 1.55 x 10^-2s D: 5.21 x 10^-3s A 8 kg block attached to a spring executed simple harmonic motion on a frictionless horizontal surface. At time t = 0 s, the block has a displacement of -0.1 m, a velocity of -0.80 m/s and an acceleration of +6.5 m/s^2. The amplitude of the motion is closest to A: 0.22 B: 0.11 C: 0.14 D: 0.17 E: 0.20