Q. Our Sun rotates about the center of the Galaxy at a distance of about light-years . What is the period of our orbital motion about the center of the Galaxy in Earth years?

Q. A farm truck moves due north with a constant velocity of 12.00 m/s on a limitless horizontal stretch of road. A boy riding on the back of the truck throws a can of soda upward and catches the projectile at the same location on the truck bed, but 12.0 m farther down the road.

In the frame of reference of the truck, at what angle to the vertical does the boy throw the can?