A day would be a different length than 24 hours.
The length of the day
Umpteen millions even if it could ever happen.
The temperature would be different on Earth.
we could go back in timeno!!!the time period of the days would be different.
The days would be longer, and the gravity would be higher if the rotation time of earth was longer. The days would be shorter, and there would be less gravity on Earth if the rotation time decreased.
the orbit
If the sun and the eart gravational rotation was to stop, we on earth would be pulled directly towards the sun and burn well and truly before we got to the sun
Seasons. If the axis of the Earth's rotation wasn't tilted with respect to the ecliptic, there would be no "winter" or "summer". There's evidence to suggest that without our seasons, life on Earth would be PROFOUNDLY different.
it would become to cold
The length of a day would increase and the number days in a year would decrease.
The days would be longer
we would die