Hey, I was trying doing some calculations and ran across a question I just can’t figure out. Hopefully I explain this well. I am trying to find the Z component of velocity of an object on earth’s surface after a given time. For example a rock lies on the ground with a tangential velocity of ~450m/s (I believe). 1 second later it will be going v1 speed in the negative z direction and v2 speed in the x direction. I believe v1^2+v2^2=450^2 but I really don't know where to go from here.