VectorsVectorsVectorsVectors

Vocab• Vector – Something that has size and

direction• Magnitude – the length of the vector• Scalar – A non vector quantity.

(Something that is not a vector)• Resultant – The vector sum of two

vectors• Components – The two vectors that

make up a resultant.

Vector Addition• Add vectors tip to tail

A

B

A

A

B

-B

R = A + B

R = A - B

Trig Review

sin 1 opp

hyp

cos 1 adj

hyp

tan 1 opp

adj

• A motor boat traveling 4 m/s, East encounters a current traveling 7.0 m/s, North.– What is the resultant velocity of the

motor boat? – If the width of the river is 80 meters

wide, then how much time does it take the boat to travel shore to shore?

– What distance downstream does the boat reach the opposite shore?