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Summary for Time, Height and Range

A projectile ...

Question

A projectile is projected with a kinetic energy K. 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 B 0.5 R
Projectile possess minimum kinetic energy at the highest point of the trajectory i.e. at a horizontal distance $\frac{R}{2}$

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