As you move further from a light source, the photons of light spread out over a larger distance. In other words, the light _____________ decreased. *

A. intensity
B. wavelength

The force of gravity that the sun exerts on a planet is always in what direction?

A. toward the sun
B. toward the planet
C. away from the sun

How much work is done when 15 Newtons are applied to move an object 3 m?

A. 5 J
B. 45 J
C. 12 J