If a particle covers half the circle of radius R with constant speed then
If a particle covers half the circle of radius R with constant speed then
- A
Momentum change is $mvr$
- B
Change in $K.E.$ is $1/2 mv^2$
- C
Change in $K.E.$ is $mv^2$
- D
Change in $K.E.$ is zero
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- [JEE MAIN 2023]