Acar can move from rest to 45 m/s in 9.0 seconds. it's acceleration is _. a. 5.0 m/s2 b. 11.0 m/s2 c. 4.0 m/s2

Iknow this isn't a question, but is there someway to ask a question under public safety or is there no category for it? i don't know if i'm overlooking it or not.

How are 3-d printers useful in studying evolution? a. to color the fossils of organisms b. to create clones of extinct organisms c. to create replicas of fossils d. to prepare paper cutouts of organisms e. to study the composition of fossils

Land is to arable ; river is a, navigable b, shallow c, presumsor d, water