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Relative Velocity

What is relat...

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What is relative velocity ? On what factors does it depend ? Can the relative velocity of two bodies be greater than the absolute velocity of either body ?

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Q. The relative velocity

V_{A B}

V_{B A}

A & B

may be
(a) greater than velocity of body

A

(b) greater than velocity of body

B

(c) less than the velocity of body

A

(d) less than the velocity of body

B

Which of the above statements are correct?

Q. When two bodies are moving in opposite directions along a straight path then the relative velocity of each body is greater than the absolute velocity of either body.
let the velocity of A and B moving in opposite directions be Va and Vb respectively.
Va=+V , Vb=-V
Velocity of B with respect to A
Vb - Va = -V-V= -2V which is not greater than the absolute velocity of B i.e, V
please explain this case.

Q. What is the relative velocity when two bodies move in opposite direction?

Q. Assertion :The relative velocity between any two bodies moving in opposite direction is equal to sum of the velocities of two bodies. Reason: Sometimes relative velocity between two bodies is equal to difference in velocities of the two bodies

Q. Assertion (A) : The value of coefficient of restitution is independent of the masses and velocities of the colliding bodies but depends on their materials.
Reason (R) : Coefficient of restitution is the ratio of the relative velocity of separation or the relative velocity of approach

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