A 110kg football player runs with a velocity of 8 m/s East and runs into a stationary, 80 kg referee standing on the field causing the referee to fly forward at 5 m/s. What is the final velocity of the football player

Abeam of light shining from water to air strikes the surface at an angle greater than 48 degrees and produces total internal reflection. if the incident beam is at a 50 degree angle what angle is the reflected beam 13 25 50 100