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1.
A ball is projected with kinetic energy 
at an angle of 
to the horizontal. At the highest point during its flight, its kinetic energy will be
at an angle of to the horizontal. At the highest point during its flight, its kinetic energy will be
2.
A bullet fired at an angle of 
with the horizontal hits the ground 3 km away. By adjusting its angle of projection, one can hope to hit a target 5 km away. Assume the muzzle speed to be same and the air resistance is negligible
with the horizontal hits the ground 3 km away. By adjusting its angle of projection, one can hope to hit a target 5 km away. Assume the muzzle speed to be same and the air resistance is negligible
3.
A particle undergoes uniform circular motion. About which point on the plane of the circle, will the angular momentum of the particle remain conserved?