A feather and a steel ball are dropped simultaneously from a tall building. Which will reach terminal velocity first?

Terminal velocity is reached when air resistance equals the weight of the falling body.

A feather has a very small weight but a large surface area. Air resistance quickly grows to match its weight, so it reaches terminal velocity almost at once.

A steel ball is heavy for its size. Its air resistance takes much longer to match its weight, so its terminal velocity comes later and is far higher.