1.

A ball whose kinetic energy is E, is thrown at anangle of 45 with the horizontal, its kineticenergy at the highest point of its flight will be-[AIPMT 1997, 2000]) (4) zero

Answer»

let v be initial velocity.K.E= E =1/2 mV²VELOCITY OF PARTICLE AT HIGHEST POINT = vcos 45kinetic energy of particle at highest point is =1/2 m(vcos45)²=1/2(mv²)(1/2)=1/2 E



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