JEE Main202523 Jan 2025Evening ShiftPhysicsWork, Power and EnergyActual
A ball having kinetic energy KE, is projected at an angle of 60^ from the horizontal. What will be the kinetic energy of ball at the highest point of its flight ?
Options
- A( KE ) 8
- B( KE ) 2
- C( KE ) 16
- D( KE ) 4
Correct answer
D. ( KE ) 4
Step-by-step solution
Initial K.E, K.E. = 1 2 mu ^2 Speed at heighest point aligned & V = u 60^ = u 2 & KE ₂= 1 2 ~m ( u 2 )^2 & = 1 4 1 2 mu ^2 & = KE 4 aligned