Use the graph to determine the object's average velocity. What is the average velocity of the object? m/s
Position vs Time
6
5
Position (m)
0
0
10
30
40
50
20
Time (s)

Which statement is the best definition of an atom? a) anything that has mass and occupies space. b) the smallest particle that has the properties of an element. c) a substance that cannot be broken down chemically into simpler substances. eliminate d) the smallest unit of a substance that exhibits all of the properties characteristic of that substance.