There must be 24 gps satellites in orbit at any given time in order to have at least satellites

Ways that industry and agriculture use physical properties to separate substances

What energy transformations occur each time the skateboarder rolls up the ramp?

Gravity is pulling an object into the sun. the closer the object gets to the sun, the greater the gravitational force that acts on the object, increasing its acceleration. a line graph plotting the speed of the object against time would have which shape? a: straight line of positive slope b: curved line that slopes upward c: curved line that slopes downward d: straight line of negative slope