At which point for a projectile its kinetic energy is completely converted into potential energy?
Correct answer: D. Not possible
- A. At point of projection
- B. At the highest point
- C. Point to hit the ground
- D. Not possible
Explanation
For a projectile with nonzero horizontal velocity, total kinetic energy never becomes zero because horizontal K.E persists. Thus kinetic energy cannot be completely converted to potential energy at any point (ignoring air resistance).
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Displacement, velocity and acceleration describe motion, including the horizontal and vertical components of projectile motion. The chapter connects these quantities with Newton's laws, momentum and impulse, then applies conservation of momentum to collisions, distinguishing elastic collisions from inelastic ones.
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