Answer:
Mutations are important to the evolution of a species because is creates new DNA for a certain gene, creating a new allele.
(Answer taken from https://www.apsnet.org/edcenter/disimpactmngmnt/topc/PopGenetics/Pages/Mutation.aspx#targetText=Mutation%20plays%20an%20important%20role,gene%2C%20creating%20a%20new%20allele.)
Hope this helps :)
1. You would go faster.
2. You would eventually hit terminal velocity.
3. No longer accelerating.
#2 Depends on the weight and surface area (wind resistance)of the object
Acceleration - a change in velocity