At time $\backslash ($ t$=0\backslash ),$ a projectile is launched from ground level. At $\backslash ($ t$=2\mathrm{.}00\backslash$mathrm$\{$~s$\}\backslash ),$ it is displaced $\backslash ($ d$=48\backslash$mathrm$\{$~m$\}\backslash )$ horizontally and $\backslash ($ h$=77\backslash$mathrm$\{$~m$\}\backslash )$ vertically above the launch point. What are the $($a$)$ horizontal and $($b$)$ vertical components of the initial velocity of the projectile? $($c$)$ At the instant it reaches its maximum height above ground level, what is its horizontal displacement $\backslash ($ D $\backslash )$ from the launch point?

$($a$)$ Number

Unit

$($b$)$ Number

Unit

$($c$)$ Number

i

Unit