do object have linear momentum when its velocity is zero.
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An object can have zero momentum when either its mass or its velocity is zero. Since, negetive mass doesn't exist, the velocity should be zero and thus, the object must be at rest.
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The total kinetic energy is the sum of the two. Because the momenta are "equal but opposite", the sum of momenta is zero. ... An object can have zero momentum when either its mass or its velocity is zero. Since, negetive mass doesn't exist, the velocity should be zero and thus, the object must be at rest
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