Suppose movement to the right is positive, and movement to the left is negative. A pen is 22 cm from the left edge of the desk. You move it to be only 15 cm from the left edge of the desk. What is its displacement? Is the value positive or negative?

Which of the following characteristics of earth's relationship to the sun explains the existence of earth's seasons? choose all that apply. earth has a satellite called the moon, which rotates around earth. earth spins on its axis, completing one rotation each day. earth's axis always points in the same direction relative to the stars. earth's axis is tilted relative to its orbital plane. earth orbits around the sun, completing one orbit each year.