an autographed baseball rolls off of a .70m high desk and strikes the floor .25m away from the base of the desk. How fast was it rolling?

Answer 1

Find out how long it takes to fall .7m

.7 = 4.9t^2

Now, with that t, and knowing that the horizontal velocity is constant,

.25 = vt

v = .25/t = .25/√(.7/4.9)