The picture shows the earth rotating on its axis. what would happen if the earth rotated faster?

this is what i got but i think the days would go faster or  something like that

Explanation:

The faster the Earth spins, the shorter our days would become. With a 1 mph speed increase, the day would only get about a minute and a half shorter and our internal body clocks, which stick to a pretty strict 24-hour schedule, probably wouldn't notice