Science speed and velocity
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11 Terms
Speed
A scalar quantity that refers to “how fast an object is moving”
Velocity
A vector quantity that refers to “the rate at which an object changes its position”
Scalar
Are quantities that are fully described by a magnitude (or numerical value) alone
Vector
Are quantities that are fully described by both a magnitude and direction
Average speed
Distance/time
Average velocity
Displacement/time
Istanteous speed
The speed at any given instant in time
average speed
The average of all instantaneous speeds; found simply by distance/ time ratio
Displacement
Is a vector quantity that refers to “ how far out of place an object is” it is the objects overall change in position.
Distance
Is a scalar quantity that refers to “ how much ground an object covered” during its motion
Which of the following are valid units of acceleration?
A. M/s
B. M/s2
C. M/s/s
D. Mi/hr/s
E. Cm/s2
F. M2/s
B (m/s2), C (m/s/s), D (mi/hr/s), E (cm/s2)
Note 
Flashcards (24)