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In a two dimensional motion,instantaneou...

In a two dimensional motion,instantaneous speed `v_(0)` is a positive constant.Then which of the following are necessarily true?

A

The average velocity is not zero at any time

B

Average acceleration must always vanish

C

Displacements in equal time intervals are equal

D

Equal path lengths are traversed in equal intervals

Text Solution

Verified by Experts

The correct Answer is:
D
We know that
speed `v_(0) = ("total distance travelled")/("time taken")`
Hence, total distance travelled = Path length =(speed) `xx` time taken
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Knowledge Check

  • In a two -dimensional motion, instantaneous speed vecv_(0) is a positive constant . Then which of the following are necessarily true ?

    A
    The acceleration of the particle is zero
    B
    The acceleration of the particle is bounded
    C
    The acceleration of the particle is necessarily in the plane of motion
    D
    The particle must be undergoing a uniform circular motion .

  • If P+Q=0 . Then which of the following is necessarily ture?

    A
    `P=0`
    B
    `P= -Q`
    C
    `Q=0`
    D
    `P=Q`

  • If AxxB=phi then which of the following is necessarily true ?

    A
    `A=phi` or `B=phi`
    B
    `A=phi` and `B=phi`
    C
    Both (A) and (B)
    D
    None of these

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