2.1 scalar & vector quantities

mass
*which of the following is the best example of a scalar quantity*
-9.8
-mass
-acceleration
-velocity
quantity that tells how much and which direction
*which of the options is the best definition of a vector*
-quantity that describes a magnitude
-magnitude described as a number
-quantity that tells how much and in which direction
-type of non-real number
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toward earth
*make this scalar statement into a vector*
a galaxy moves at 1000 km/s
way left field, just inside foul line
*make this scalar statement into a vector*
a baseball hit 310 ft
bearing 20 degrees north of east
*make this scalar statement into a vector*
a boeing 747 going 805 km/h
39m at an angle 40° east of north
*If you walk 30 m to the north, then turn and walk 25 m to the east, how far away are you from where you started?*
-17m at an angle 34° east of north
-55m at an angle 56° east of north
-5m at an angle 50° east of north
-39m at an angle 40° east of north
magnitude: 9.0554 km

angle; measured north of east: 83.7 degrees

*An explorer sets out for 8.000 km bearing 30° North of East, then starts bearing 45° North of East for 1.414 km, then goes another 8.000 km bearing 30° North of West, according to the figure. What is the magnitude and angle of the single vector that takes the explorer to the same destination? Note: figure not drawn to scale. Approximate the square root of 2 as 1.414.*
velocity
displacement
torque
*list vector quantities*
distance
speed
kinetic energy
density
*list scalar quantities*
size or amount with units
magnitude
quantity with magnitude only
scalar
quantity with magnitude and direction
vector
starting point of a vector
tail
arrowhead of a vector
tip
sum of 2 or more vectors
resultant vector
method for finding a resultant vector in which the tail of one vector is drawn from the tip of the other
tip-to-tail method
one of the two vectors that are perpendicular to each other and equal the original vector when added together
component
direction
*which of the following pieces of information CANNOT be determined from a scalar quantity*
-magnitude
-amount
-units of measurement
-direction
52 m at an angle 17° east of north
*If you walk 50 m to the north, then turn and walk 15 m to the east, how far away are you from where you started?*
-65 m at an angle 17° east of north
-35 m at an angle 73° east of north
-48 m at an angle 73° east of north
-52 m at an angle 17° east of north
Vector quantities have magnitude and direction, whereas scalar quantities only have magnitude.
*Which of the following best describes the difference between scalar and vector quantities?*
-Scalar quantities can only be whole numbers, whereas vector quantities can be fractions or decimals.
-Vector quantities have magnitude and direction, whereas scalar quantities only have magnitude.
-Vector quantities only have magnitude, whereas scalar quantities have magnitude and direction.
-Scalar quantities can only be added by breaking them into components.
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