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# Answer to Question #21471 in Mechanics | Relativity for Saif Chachar

Question #21471
Explain the circumstances in which the velocity &quot;v&quot; and acceleration &quot;a&quot; of car are :
(i) Parallel (ii) Anti-parallel (iii) Perpendicular to each other (iv) &quot;v&quot; is zero but &quot;a&quot; is not zero
(v) &quot;a&quot; is zero but &quot;v&quot; is not zero.
1
2013-01-29T08:20:19-0500
(i) Parallel.
If a car accelerates the velocity &quot;v&quot; and acceleration &quot;a&quot; of car are parallel.

(ii) Anti-parallel.
If the car slows the velocity &quot;v&quot; and acceleration &quot;a&quot; of car are anti-parallel.

(iii) Perpendicular to each other.
If the car is moving along the circumference the velocity &quot;v&quot; and acceleration &quot;a&quot; of car are perpendicular to each other.

(iv) &quot;v&quot; is zero but &quot;a&quot;& is not zero.
If the car starts from rest &quot;v&quot; is zero but &quot;a&quot;& is not zero.

(v) &quot;a&quot; is zero but &quot;v&quot; is not zero.
If the car is moving uniformly &quot;a&quot; is zero but &quot;v&quot; is not zero.

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Assignment Expert
24.07.14, 14:03

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alex brown
24.07.14, 00:25

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29.01.13, 19:04

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Saif Chachar
29.01.13, 16:59

Great !!!!!!!!!!!!