Describe why cars are inefficient macIf a skateboarder is moving at 4 meters per second then changes its velocity to 10 meters per second over the course of 10 seconds what is the skateboards acceleration? hines in terms of thermodynamics.

The picture below shows two galaxies. spiral galaxy and elliptical galaxy which of these statements best describes a similarity between the two galaxies? (2 points) both have elongated centers. both have centers shaped like bars. both change their shape from time to time. both are held together by gravitational forces.