COMEDK · Physics · 6. Work Power Energy
A particle is projected at an angle \(30^{\circ}\) with horizontal having kinetic energy \(K\). The kinetic energy of the particle at highest point is.
- A \(\dfrac{3}{4} K\)
- B \(\dfrac{3}{8} K\)
- C \(\dfrac{5}{8} K\)
- D \(\dfrac{1}{2} K\)
Answer & Solution
Correct Answer
(A) \(\dfrac{3}{4} K\)
Step-by-step Solution
Detailed explanation
Let the initial velocity of the particle be \(u\). The initial kinetic energy is given by \(K = \dfrac{1}{2}mu^2\). At the highest point of the trajectory, the vertical component of the velocity becomes zero, while the horizontal component remains constant. The horizontal…
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