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  4. A projectile is fired at 30° with momentum p. Neglecting friction, the change in kinetic energy, when it returns back to the ground, will be:

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Q. A projectile is fired at $ 30^{\circ} $ with momentum $p$. Neglecting friction, the change in kinetic energy, when it returns back to the ground, will be:

Uttarkhand PMTUttarkhand PMT 2004

Solution:

When a projectile is projected from the ground and returns back to the ground in a projectile motion, the kinetic energy does not change.