Answer to Question #68496 in Mechanics | Relativity for John

Question

How fast must a ball be rolled along the surface of a 70-cm high table so that when it rolls off the edge it will strike the floor at the same distance(70-cm) from the point directly below the edge of the table?
a)174.5 cm/s
b) 143.7 cm/s
c) 215.3 cm/s
d) 185.2 cm/s