If I were to throw a rock of a cliff at 12 m/s as a horizontal velocity, what will the final velocity of the rock become when it hits the ground? I am tempted to say 12 m/s because the horizontal portion is independent of vertical but it doesn't make sense that way.
For the horizontal portion, there is no acceleration, initial velocity is 12 m/s and final, I have no idea. For the vertical portion, acceleration is -9.81 m/s/s (gravity), velocity is 0 m/s?
Please help me, can someone explain this concept?