Objects A and B are at the origin. If object A moves to $(- 2, 8)$ $(-2 ,8 )$ and object B moves to $(- 5, - 6)$ $(-5 ,-6 )$ over $4 s$ $4 s$ , what is the relative velocity of object B from the perspective of object A?

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Objects A and B are at the origin. If object A moves to $(- 2, 8)$ $(-2 ,8 )$ and object B moves to $(- 5, - 6)$ $(-5 ,-6 )$ over $4 s$ $4 s$ , what is the relative velocity of object B from the perspective of object A?

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Answer 1 · 2016-03-01T11:10:46

${\to v}_{A B} = \frac{\sqrt{203}}{4} \frac{u n i t}{s}$ $vec v_(AB)=sqrt 203/4( unit)/s$

Explanation:

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$displacement between two point is:$ $"displacement between two point is:"$
$Delta vec x=-5-(-2)=-3 " unit"$
$Delta vec y=-6-8=-14 " unit"$
$Delta vec s=sqrt((-3)^2+(-14)^2))$
$Delta vec s=sqrt (9+194)=sqrt 203$
$vec v_(AB)=(Delta vec s)/(Delta t)$
$vec v_(AB)=sqrt 203/4( unit)/s$

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Objects A and B are at the origin. If object A moves to $(- 2, 8)$ $(-2 ,8 )$ and object B moves to $(- 5, - 6)$ $(-5 ,-6 )$ over $4 s$ $4 s$ , what is the relative velocity of object B from the perspective of object A?

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Objects A and B are at the origin. If object A moves to (-2 ,8 )(−2,8)(-2 ,8 ) and object B moves to (-5 ,-6 )(−5,−6)(-5 ,-6 ) over 4 s4s4 s, what is the relative velocity of object B from the perspective of object A?

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Explanation:

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Objects A and B are at the origin. If object A moves to $(- 2, 8)$ $(-2 ,8 )$ and object B moves to $(- 5, - 6)$ $(-5 ,-6 )$ over $4 s$ $4 s$ , what is the relative velocity of object B from the perspective of object A?