Question

A particle is moving in a circle of radius r having centre
at 0, with a constant speed v. The magnitude of
change in velocity in moving from A to B is
1)2v
2)0
3)√3v
4)v​

Answer 1

Answer:

I think the ans should be v

Answer 2

Answer:

4) v

Explanation:

To solve this question you need to know the vector and uniform circular motion.

Vector means a quantity which have both direction and magnitude.

There are many different types of vector like; null vector, parallel vector, antiparallel vector, orthogonal vector.

We can also find the resultant of two vector.

We can find the resultant by the cosine law of vector.

i.e. R = √(A² + B² + 2ABcosϴ)

Please refer to the attachment for a well explained answer.

Please mark as brainliest