Physics Review Question

Unit: Mechanics
Year: 1994 Question#: 1
Question: A car travels 20. meters east in 1.0 second. The displacement of the car at the end of this 1.0-second interval is

(1 ) 20.m
(2 ) 20. m/s
(3 ) 20. m east
(4 ) 20. m/s east

What is this question really asking?




Explanation by: Maria K

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Answer 1
20. m

INCORRECT

This answer is dealing with distance. Remember displacement is a vector. return to top























Answer 2
20. m/s

INCORRECT

This is dealing with the speed return to top



























Answer 3
20. m east

CORRECT

20. METERS EAST : displacement - the position of an object. Vectors must have a magnitude (amount) and direction. return to top


























Answer 4
20.0 m/s east

INCORRECT

This is dealing with velocity not displacement. return to top


























What's this question really asking?
What is the change in the position of the car?


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