A seal and a penguin are playing a fun game of tag. the penguin first swims rightward 6m, then dodged leftwards another 10m. The penguins total travel time is 30. What is the penguins average velocity, and average speed during the chase?

jupiter is the largest planet in our solar system, having a mass and radius that are respectively, 318 and 11.2 times that of earth. suppose that an object falls from rest near the surface of each planet and that the acceleration due to gravity remains constant during the fall. each object falls the same distance before striking the ground. determine the ratio of the time of fall on jupiter to that on earth.

snell's law

refractve index = sin incidence / sin refraction