Physics
The rate of change of linear momentum of a body falling freely under gravity is equal to it's ________ ?

Impulse
Weight
Kinetic Energy
Potential Energy

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Physics
Planets do not twinkle because

They are nearer to earth and hence we receive a greater amount of light.
They emit light of a constant intensity
They are very far away from the earth resulting in decrease in intensity of light
Their distance from the earth does not change with time

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