VECTORS VECTOR – ANY QUANTITY THAT IS DEFINED BY A MAGNITUDE (SIZE) AND A DIRECTION.

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Presentation transcript:

VECTORS VECTOR – ANY QUANTITY THAT IS DEFINED BY A MAGNITUDE (SIZE) AND A DIRECTION.

4. When adding vectors graphically remember: “Draw to scale, ‘TIP-ON-TAIL’!” Things you should know about vectors: 1. Vector quantities are represented graphically by an arrow. MAGNITUDE DIRECTION TIP TAIL 2. A vector can be moved anywhere without changing the vector as long as the vector has the same magnitude and direction. = = 3. The negative of a vector simply reverses its direction 180 . A -

RESULTANT - A single vector that can replace all others and give the same result. The resultant is always drawn from the tail of the first vector to and toward the tip of the last.

VECTOR DIRECTION CONVENTIONS N E S W  N o f e  N o f W  S o f W  S o f E ALWAYS MEASURE THE DIRECTION AT THE TAIL OF THE VECTOR FROM THE HORIZONTAL TO THE VECTOR

ADDING PERPENDICULAR VECTORS 1. Sketch the vectors added graphically, drawing the HORIZONTAL VECTOR FIRST. Horizontal Vertical R 2. Solve for the magnitude of the resultant using the Pythagorean theorem. 3. Find the direction of R using: 

Find the Resultant: A. d 1 = 125 m, North d 2 = 112 m, East d 1 + d 2 = ? B. v 1 = 12.5 m/s South v 2 = 14.8 m/s, West v 1 + v 2 = ? = m,  N of E = m/s,  S of W

5.30 km Larry the Cucumber walks 5.3 km, east and then 3.7 km north to go to Krispy Kreme km 6.46 km  ? ? What displacement would Bob need to follow to go directly to Krispy Kreme if he starts at the same place Larry did? Solve Mathematically.