If the entire history of the Earth was scaled to a time line the length of a football field, human civilization would occupy what proportion of the field?
A) a sliver no thicker than a piece of paper
B) a silver no thicker than an atom
C) about a quarter of the field
D) about a half of the field
Question 2
Consider a velocity with components 36. m/s Westward and 22. m/s Northward. What is its magnitude and direction?
What will be an ideal response?