The spring in a spring loaded cannon has a spring constant of 470N/m. A 0.05kg ball bearing is loaded into the cannon and the spring is compressed 0.1m. What will be the velocity of the ball bearing the instant before it hits the ground if the cannon s fired horizontally off of a 16m high cliff?

V^2 = Vo^2 + 2g*h.

Vo = 0.
V = ?