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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.
Related Questions: - A body of mass (4m) is lying in x-y plane at rest. It suddenly explodes into three
- The electric potential at a point in free space due to a charge Q coulomb is Q x 10¹¹ v
- What is the time taken by moon light to reach earth?
- A galvanometer having resistance of 50 Ω requires a current of 100μA to give full
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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 body of mass (4m) is lying in x-y plane at rest. It suddenly explodes into three
- The electric potential at a point in free space due to a charge Q coulomb is Q x 10¹¹ v
- What is the time taken by moon light to reach earth?
- A galvanometer having resistance of 50 Ω requires a current of 100μA to give full
- A ball is dropped from a height of 20 cm. Ball rebounds to a height of 10cm
Topics: Motion in Plane (93)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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