a 4 kilogram bowling ball is rolled at 15 m/s down a lane and is stopped by a bowling pin in .5 seconds. what is the momentum of the ball as it rolls before it is stopped ?

Which statement is true if the refractive index of medium a is greater than that of medium b? a. total internal reflection is possible when light travels from air to medium b to medium a. b. total internal reflection is possible when light travels from medium a to medium b. c. total internal reflection is possible when light travels from medium b to medium a. d. total internal reflection is possible when light travels from air to medium a. e. total internal reflection is possible when light travels from air to medium b.