Chapter 1: Exercises (1.26 - 1.30)

1.26 How many drops of water are in all the oceans on Earth?

1.27 How many pizzas are consumed each academic year by students at your school?

1.28 How many dollar bills would you have to stack to reach the moon? Would that be cheaper than building and launching a space-craft?

1.29 How much would it cost to paper the entire United States (including Alaska and Hawaii) with dollar bills? What would be the cost to each person in the United States?

Section 1.7 Vectors and Vector Addition
1.30 Hearing rattles from a snake, you make two rapid displacements of magnitude 1.8m and 2.4m. In sketches (roughly to scale), show how your two displacements might add up to give a resultant displacement of magnitude a) 4.2m; b) 0.6m; c) 3.0m.