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Homework Problems

1. The figure shows vectors A and B. Graphically calculate the following:

A+B, A–B, B–A, –2B, A–2B

No numbers are involved.

2. Phnom Penh is 470 km east and 250 km south of Bangkok. Hanoi is

60 km east and 1030 km north of Phnom Penh. (a) Choose a coordinate

system, and translate these data into

.

x and

.

y values with the proper plus

and minus signs. (b) Find the components of the

.

r vector pointing

from Bangkok to Hanoi.

3 . If you walk 35 km at an angle 25

°

counterclockwise from east, and

then 22 km at 230

°

counterclockwise from east, find the distance and

direction from your starting point to your destination.

A

B

Problem 1.

SA solution is given in the back of the book.A difficult problem.

A computerized answer check is available.

.

A problem that requires calculus.

Chapter 7Vectors