Physics
During the motion of a projectile fired from the earth surface, ________

Its kinetic energy remains constant
Horizontal component of its velocity remains constant
Its momentum remains constant
Vertical component of its velocity remains constant

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Physics
Rain drops fall from great height. Which among the following statements is true regarding it?

They fall with same ultimate velocity
Their velocity increases and they fall with different velocity on the earth
Their velocity increases and they fall with same velocity on the earth
They fall with that ultimate velocity, which are different for different droplets

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