Q.

Examples of zero vectors among the following are

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a

The acceleration of a particle moving with uniform velocity

b

The velocity of particle when particle is at rest

c

The displacement of a stationary object over any arbitary interval of time

d

The velocity of particle when particle is accelerating

answer is A, B, C.

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Detailed Solution

When particle is at rest S¯=0

v¯=ds¯dt=do¯dt=0

(b) w.k.t : acceleration a=dvdt=ddtconstant

a=0 m/s2 (c) when an object is at rest there is no change in position S¯=0

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