A proton moves at $4\mathrm{.}50\backslash$times $10^(5)($m$)/($s$)$ in the horizontal direc$-$

T tion. It enters a uniform vertical electric field with a magni$-$

tude of $9\mathrm{.}60\backslash$times $10^(3)($N$)/($C$).$ Ignoring any gravitational effects,

find $($a$)$ the time interval required for the proton to travel

$5\mathrm{.}00$ cm horizontally, $($b$)$ its vertical displacement during

the time interval in which it travels $5\mathrm{.}00$ cm horizontally,

and $($c$)$ the horizontal and vertical components of its veloc$-$

ity after it has traveled $5\mathrm{.}00$ cm horizontally.