A person standing at the edge of a seaside cliﬀ kicks a stone over the edge with a speed of 19 m/s. The cliﬀ is 68 m above the water’s surface, as shown.

Question

anonymous · Answer

Is there a question in this? It sounds like you're asking about movement in two dimensions, but there is no actual inquiry or problem to solve.

anonymous · Answer

68=0.5(9.81)(t^2)
t=sqrt(2(68)/9.81)
x=19(t)
That should give you horizontal distance travelled which is what I assumed you wanted

anonymous · Answer

If you wanted the horizontal distance, degret is correct.