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.

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

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