yes it does
The length of the planet's year would be affected.
Nothing realy really. If it sped up it would spin faster and make shorter days and would revolve around the sun faster. If it slowed down it would spin slower making longer days and it would revolve around the sun slower.
it would be faster
It moves faster or slower
It depends on the planet. The planets orbiting closer to the sun than earth (Mercury and Venus) have shorter years, because they have smaller orbits, and travel faster. The planets further from the sun (Mars, Jupier, Saturn, Uranus, and Neptune) have longer years because they have larger orbits and travel slower.
Faster
faster. and matter then would move slower
No, if a seahorse is frightened it would be faster, it is just slower than most other fish.
When a river floods it water will flow faster then the normal speed.
faster. and matter then would move slower
Some types of cables used for connecting to the internet will appear to result in a slower connection the longer the cable. This is primarily a result of signal loss, resulting in more packets requiring to be re-transmitted. For most home use however you would not run into this issue.
Days are longer than nights in the summer, and the reverse in the winter.