Warm-Up Exercise for lecture 3

Due 8:00 am, Tues, Sep 9

Physics 105, Fall 2008

T/F: Vectors are commutative (that is A + B = B + A)
true
false

To get the magnitude of a vector, you should:
add the magnitudes of its components
take the square root of the sum of the squares of its components
none of the above

A car going 30 m/s approaches a truck going 10 m/s in the opposite direction. The gap between the two of them:
remains constant
closes at 20 m/s
closes at 40 m/s

Briefly describe how you would go about adding two vectors together using a ruler and protractor: