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

Question #21471

Explain the circumstances in which the velocity "v" and acceleration "a" of car are :

(i) Parallel (ii) Anti-parallel (iii) Perpendicular to each other (iv) "v" is zero but "a" is not zero

(v) "a" is zero but "v" is not zero.

(i) Parallel (ii) Anti-parallel (iii) Perpendicular to each other (iv) "v" is zero but "a" is not zero

(v) "a" is zero but "v" is not zero.

Expert's answer

(i) Parallel.

If a car accelerates the velocity "v" and acceleration "a" of car are parallel.

(ii) Anti-parallel.

If the car slows the velocity "v" and acceleration "a" of car are anti-parallel.

(iii) Perpendicular to each other.

If the car is moving along the circumference the velocity "v" and acceleration "a" of car are perpendicular to each other.

(iv) "v" is zero but "a"& is not zero.

If the car starts from rest "v" is zero but "a"& is not zero.

(v) "a" is zero but "v" is not zero.

If the car is moving uniformly "a" is zero but "v" is not zero.

If a car accelerates the velocity "v" and acceleration "a" of car are parallel.

(ii) Anti-parallel.

If the car slows the velocity "v" and acceleration "a" of car are anti-parallel.

(iii) Perpendicular to each other.

If the car is moving along the circumference the velocity "v" and acceleration "a" of car are perpendicular to each other.

(iv) "v" is zero but "a"& is not zero.

If the car starts from rest "v" is zero but "a"& is not zero.

(v) "a" is zero but "v" is not zero.

If the car is moving uniformly "a" is zero but "v" is not zero.

## Comments

Assignment Expert24.07.14, 14:03Dear Alex Brown,

You're welcome. We are glad to be helpful.

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alex brown24.07.14, 00:25very muuuucccchhhh helpful for me... thankuuu

Assignment Expert29.01.13, 19:04You're welcome. We are glad to be helpful.

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Saif Chachar29.01.13, 16:59Great !!!!!!!!!!!!

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