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COE in SHM

A projectile ...

Question

A projectile is projected with a kinetic energy $E$ . Its range is $R$ . It will have the minimum kinetic energy, after covering a horizontal distance equal to

A

0.25 R

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B

0.5 R

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C

0.75 R

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D

R

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Solution

The correct option is A $0.5 R$
Kinetic energy of a projectile is minimum at the highest point .So the horizontal distance is half of the range $R$ i.e $, 0.5 R$

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