A boy throws a ball of mass 200g with v =20 m per s at angle 40 with horizontal. What is its K.E at highest point of trajectory
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Zero
..
as at the highest point velocity will be zero...
k e = 1/2mv²...
when v=0
KE =1/2m0²
=0
..
as at the highest point velocity will be zero...
k e = 1/2mv²...
when v=0
KE =1/2m0²
=0
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