vector and scalars
what is magnitude
just a number, amount with no direction
what two things describe a vector
magnitude and direction
Which describes the total path traveled?
distance
What method connects the tail of one vector to the tip of another?
tail to tip (or head to tail)
To subtract a vector, what vector do you add instead?
the negative vector
magnitude is always positive or negative
positive
What does the length of a vector arrow represent?
magnitude
Which describes the straight-line change from start to finish?
displacement
Does changing the order of vectors change their resultant?
no. the resultant will be the same. it is commutative
What is the relationship between a vector and its negative?
Same magnitude, opposite direction
What is a quantity that has magnitude but no direction called?
scalar
a person is driving 60 mph South. what is the magnitude of the driver's velocity? what is the direction
60 mph. South
A person walks 12 blocks east and 9 blocks north. What is the magnitude of their displacement?
15 blocks
What graphical method can be used when vectors aren't at right angles?
parrellelogram method
If vector Q points east, which direction does −Q point?
west
What is a quantity that has magnitude and direction called?
vector
A displacement of 10 m north has what magnitude and direction?
In the same problem, what is the approximate direction of the displacement?
north east
If you add three vectors, can you still use the tail-to-tip method?
yes
Why is the sign of a vector important?
the sign indicates direction
name two vectors and scalars
vectors: displacement, velocity
scalars: temperature, mass
Why can't a vector be completely described by its magnitude alone?
Because a vector requires both magnitude and direction
Why can distance be greater than displacement?
Distance measures the actual path traveled, while displacement is the straight-line change from beginning to end.
What does the resultant vector represent?
The total/resulting vector after combining the vectors.
Explain how you would calculate P − Q using vector addition.
change P - Q into P + (-Q) then add the vectors