An object is projected from the ground sideways with an initial velocity $50$ meters per second and its $($ x $)$ and $($ y $)$ displacements have functions over time $($ t $)($in seconds$)$: $[$ eginarrayl x$($t$)=40$ t y$($t$)=30$ t$-5$ t$^2$ endarray $]$ Then the object reaches its highest point at the time $($ t $)$ where $($ y$^$prime$($t$)=30-5$ t$=0).$ True False An object is projected from the ground sideways with an initial velocity $50$ meters per second and its x and y displacements have functions over time t $($in seconds$)$: $[$ x$($t$)=40$ t$,$; y$($t$)=30$ t$-5$ t$^2.]$ Then the object reaches its highest point at the time t where y$^\text{'}($t$)=30-5$ t$=0.$ True False