Question1

By means of Snell’s law, convince someone that for total internal reflection to happen, that index of refraction for the incident material has to be greater than the index of refraction for refracted material (such as light difficult to travel from inside the plastic block back into air).

Question2

A discus thrower accelerates a discus from rest to a speed of 25.0 m/s by whirling it through 1.25 rev. assume the discus moves on the arc of a circle 1.00 m in radius. Compute final angular speed of disc and conclude the magnitude of angular acceleration?

Question3

A basketball player releases ball 7 ft above the floor when he is 30 ft from the basket. The ball goes throughout the rim of the basket (which is 10 ft above the floor) 1.5 seconds after release. Find out an initial velocity and the maximum height above the floor reached by the ball.