What is the vertical motion of an object?

Vertical motion is the movement of an object in a straight line.

When an object is thrown up, it always comes down, as it is affected by the acceleration due to gravity. This is called as vertical velocity.

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jupiter is the largest planet in our solar system, having a mass and radius that are respectively, 318 and 11.2 times that of earth. suppose that an object falls from rest near the surface of each planet and that the acceleration due to gravity remains constant during the fall. each object falls the same distance before striking the ground. determine the ratio of the time of fall on jupiter to that on earth.