The velocity of a projectile at the initial point $A$ is $(4 \hat{i}+5 \hat{j}) \mathrm{~m} / \mathr

Question

The velocity of a projectile at the initial point $A$ is $(4 \hat{i}+5 \hat{j}) \mathrm{~m} / \mathrm{s}$. Its velocity (in $\mathrm{m} / \mathrm{s}$) at point $B$ (when it hits the same horizontal level) is

Professor PC Thomas Classes · Answer

(a) : At landing point $B$, the $x$-component of velocity remains unchanged while the $y$-component reverses its direction. \ $	herefore$ The velocity of the projectile at point $B$ is $4 \hat{i}-5 \hat{j} \mathrm{~m} / \mathrm{s}$.