A ball of mass M and knitic energy is thrown at an angle of 45 degree with the horizontal the momentum at the highest point of its path will be
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KE=1/2mv^2
but V =vcos45°=(V/√2)^2
therefore KE=1/2m(v/√2)^2
KE=1/2mv^2 *1/2
KE = E/2
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