Lower temperatures increase maximum thrust, which allows the plane to travel faster. Private jets are smaller compared to the average commercial airliner.

Are bigger or smaller planes better?

And since smaller planes generally have less powerful engines and weaker climb performance, they are at a greater risk than most bigger planes. Hail is common as well and could induce significant damage.

Do heavier planes fly slower?

In the same way a rock that is thrown pushes its way through the air as compared to a cotton ball, a paper airplane with more mass flies faster and farther than a paper plane with less mass, up to a point. If the mass is too great, the wings can't hold the plane in the air.