1. ## marble rollin

A marble rolling along a table at 18cm a second rolls off the edge if a table 80.0 cm high calc the distance the marble lands from the table(distance along the floor).

I only wish i knew how

2. Originally Posted by pepperroni
A marble rolling along a table at 18cm a second rolls off the edge if a table 80.0 cm high calc the distance the marble lands from the table(distance along the floor).
using cm for distance and sec for time ...

$\Delta x = v_x \cdot t = 18t$

$\Delta y = -\frac{gt^2}{2}$

$-80 = -490t^2$

solve for $t$ , then determine $\Delta x$