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A particle is moving in a circle with uniform speed v. In moving from a point to another diametrically opposite point
Options
(a) The momentum changes by mv
(b) The momentum changes by 2mv
(c) The kinetic energy changes by 1/2 mv²
(d) The kinetic energy changes by mv²
Correct Answer:
The momentum changes by 2mv
Explanation:
The diametrically opposite points, the velocities have same magnitude but opposite directions. Therefore, change in momentum is MV – (- MV) = 2MV.
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Topics: Motion in Plane
(93)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A current I ampere flows along the inner conductor of a co-axial cable and returns
- The rate of increase of thermo-e.m.f. with temperature at the neutral temperature
- A body of mass M hits normally a rigid wall with velocity V and bounces back
- An ideal gas is compressed to half its initial volume by means of several processes.
- A body starts from rest with an acceleration of 2 m/s². After 5 second,
Topics: Motion in Plane (93)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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