An autographed baseball rolls off of a 1.5m high desk and strikes the floor 0.60m away from the desk.

Question

How fast was it rolling on the desk before it fell? The acceleration of gravity is 9.81m/s^2.
Answer in units of m/s

Answer 1

time to fall 1.5m
h=1/2 a t^2
t=sqrt(2h/a)=sqrt(3.0/9.8) figure that out.

speedhorizontal=distance/time
= .6/time to fall.