Which statement is true about the critical angle of a medium with respect to air? the refractive index of the medium is taken with respect to air. a. the critical angle increases as the refractive index increases. b. the critical angle decreases as the refractive index decreases. c. the critical angle does not change when there is a change in the refractive index. d. the critical angle is equal to the refractive index.

Asoccer ball of mass 0.43 kg is rolling with velocity < 0, 0, 1.8> m/s, when you kick it. your kick delivers an impulse of magnitude 2.7 nâ·s in the direction. the net force on the rolling ball, due to the air and the grass, is 0.22 n in the direction opposite to the direction of the ball's momentum. using a time step of 0.5 s, find the position of the ball at a time 1.5 s after you kick it, assuming that the ball is at the origin at the moment it is kicked. use the approximation . (express your answer in vector form.) < entry field with incorrect answer 12.97 , entry field with correct answer 00 , entry field with incorrect answer 2.7 > m