A ball is projected with velocity V_0 at an a | vedclass

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(C) In projectile motion,the horizontal component of velocity $(v_x = V_0 \cos 	heta)$ remains constant throughout the flight because there is no hor

Vedclass · Accepted Answer

Horizontal component of momentum will be conserved.

Vedclass · Answer

(C) In projectile motion,the horizontal component of velocity $(v_x = V_0 \cos 	heta)$ remains constant throughout the flight because there is no horizontal acceleration $(a_x = 0)$.Since momentum is defined as $p = mv$,the horizontal component of momentum $(p_x = m v_x)$ remains constant or conserved.At the highest point,the vertical component of velocity is zero,but the horizontal component is not,so kinetic energy is not zero.Gravitational potential energy $(U = mgh)$ is maximum at the highest point because height $h$ is maximum.Therefore,the correct statement is that the horizontal component of momentum is conserved.

Section $A$	Section $B$
$(i)$ Nitrosomonas	$(a)$ $\text{Nitrite} \rightarrow \text{Nitrate}$
$(ii)$ Agrobacterium	$(b)$ $\text{Nitrogen fixing bacteria}$
$(iii)$ Rhizobium	$(c)$ $\text{NO}_3^- \rightarrow \text{N}_2$
$(iv)$ Nitrobacter	$(d)$ $\text{Ammonia} \rightarrow \text{Nitrite}$
	$(e)$ $\text{Denitrifying bacteria}$

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

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