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Q.

In a two dimensional motion, instantaneous speed v0 is a positive constant. Then which of the following are necessarily true?

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a

The acceleration of the particle is necessarily in the plane of motion

b

The particle must be undergoing a uniform circular motion

c

The acceleration of the particle is zero

d

The acceleration of the particle is bounded

answer is C.

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Detailed Solution

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This motion is two dimensional and given that instantaneous speed is positive constant. Acceleration is defined as the rate of change of velocity (instantaneous speed), hence it will also be in the plane of motion.

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In a two dimensional motion, instantaneous speed v0 is a positive constant. Then which of the following are necessarily true?