Answers

2015-09-01T22:03:15+05:30
Its momentum will be zero because  the gravtational force is attracting it so no force applied to it is remaining at the highest point  and as we know,momentum=mass multipied by velocity,where force enhance the momentum hence when no force is remaining momemntum becomes zeero
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2015-09-01T22:05:43+05:30
Momentum is the product of mass and velocity.
The velocity at the highest point is zero therefore the momentum is also zero at the highest point
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