Physics Review QuestionUnit:
MechanicsYear:
1994 Question#:
4Question:
Which is a vector quantity?(1
) distance(2
) time(3
) speed(4
) accelerationWhat is this question really asking?
Explanation by: Liz M. [ Return to question menu
]Answer 1
distance INCORRECT This answer is incorrect because in order for something to be a vector quantity it must be described by both magnitude and direction. Distance is only described by magnitude; it is a scalor quantity. return to top
Answer 2
time INCORRECT This answer is incorrect because in order for something to be a vector quantity it must be described by both magnitude and direction. Time is a scalor quantity it is only measured by magnitude. return to top
Answer 3
speed INCORRECT This answer is incorrect because in order for something to be a vector quantity it must be described by both magnitude and direction. Speed is a scalor quantity; it is only described by magnitude. return to top
Answer 4
acceleration CORRECT ...because a vector quantity has magnitude and direction. Acceleration is a vector quantity because it is not only described by number with appropriate units but also by direction. It is a change in velocity/time. return to top
What's this question really asking?
The question is asking if the student knows the definition of a vector. return to top |

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