NEET UG PHYSICS MCQ: WORK-ENERGY-POWER

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Velocity vector and acceleration vector in a uniform circular motion are related as

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Correct option: B

Perpendicular to each other

Option B is correct because in uniform circular motion, the velocity vector is tangential to the circle, and the acceleration vector (centripetal acceleration) points towards the center of the circle, making them perpendicular.

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{A}

ball is dropped on the ground from a height of

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2\mathrm{\;m}{\mathrm{s}^{ - 1}}

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x = \mathrm{m}{\mathrm{s}^{ - 1}}

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is A force

\mathrm{\vec F} = - K\left( {y\hat i + x\hat j} \right)

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\mathrm{\vec F}

on the particle is A motor is used to deliver water at a certain rate from a given pipe. To obtain 3 times water from same pipe in same time, by what factor should power of the motor be increased. A body projected vertically from the earth reaches a height equal to earth’s radius before returning to the earth. The power exerted by the gravitational force is greatest The speed limit of a car over a roadways bridge in the form of a vertical arc is

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