A student rides his bike off the roof of the high school horizontally at 8 m/s that is 12.5 m high.

1. How far from the base does the object land?

2. What is his y-direction velocity just before it strikes the ground?

1. h = 4.9t^2. 12.5 = 4.9t^2. t = ?.

d = V*t. d = 8*t.

2. Y = Yo + g*t.
Yo = 0, g = 9.8 m/s^2, t = Value cal. in prob. 1.