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  4. A fielder in a cricket match throws ball from the boundary line to the wicket keeper. The ball describes a parabolic path. Which of the following quantities remain constant during the motion in air? (Neglecting air resistance)

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Q. A fielder in a cricket match throws ball from the boundary line to the wicket keeper. The ball describes a parabolic path. Which of the following quantities remain constant during the motion in air? (Neglecting air resistance)

AMUAMU 2007

Solution:

Since, acceleration due to gravity act along the vertical, so it has no component along the horizontal. Hence, horizontal motion is a non-accelerated motion with uniform velocity.
So, $ u_{x}= $ constant