If light has energy but no mass, how can it have momentum?

Question

If light has energy but no mass, how can it have momentum?

In: 55

Answer 1

Easiest way I can explain it is that even though it has no mass, it still is a particle. Like throwing a balloon at someone still has impact. Balloons are relatively weightless but something it hits will react.

That means your shadow, has negative weight. And satellites in space, are impacted by the sun’s rays of lights pushing it.