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E-STAR - Student
E-Lecture - Vertical upward motion

When a ball is thrown vertically upwards from the ground, its velocity reduces gradually under the influence of earth’s gravity working towards the opposite direction of the ball’s motion. So, the ball is moving with retardation until it attains the maximum height where the velocity becomes zero.

Then, ball starts falling uniformly downwards and velocity increases gradually under the influence of gravity reaching back to its projection plane.