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(C) In projectile motion,there is no external horizontal force acting on the object (ignoring air resistance). According to Newton's second law,if the

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Horizontal component of momentum will be conserved.

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(C) In projectile motion,there is no external horizontal force acting on the object (ignoring air resistance). According to Newton's second law,if the net external force in a direction is zero,the momentum in that direction remains constant. Since the horizontal component of velocity $v_x = V_0 \cos(30^o)$ remains constant throughout the flight,the horizontal component of momentum $p_x = m v_x$ is conserved. Therefore,the correct statement is that the horizontal component of momentum will be conserved.

$A$ ball is projected with velocity $V_0$ at an angle of elevation $30^o$. Mark the correct statement.

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