Here's the question you clicked on:
1234Adeel
In what direction acceleration remain zero in projectile???
in horizontal direction
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@123Adeel my medal plz
Look carefully, The velocity in the X-axis is always constant in a P.M. it is always. ucos@.. No change in velocity means no acceleration. You got It ?|dw:1403439180723:dw|
The gravitational force of the Earth is acting vertically on the projectile,and there is no force on the horizontal direction(if u are neglecting air drag).So the horizontal component of aceleration is zero and the velocity is constant in that component.