http://s359.photobucket.com/albums/oo40/jsmith613/?action=view¤t=PhysQuestion.jpg it should say "show that the" NOT "sow that the" The horizontal velocity is 33.97 m/s. (34 m/s) Why do I use this value to calculate time to travel from C to G and not the initial 42 m/s. Is it because the 33.97 m/s value is constant throughout the entire journey of the ball, BUT the 42 m/s value is only true for my initial and final velocity. In between, however, the value 42 m/s is different. This is true because the combined horizontal velocity and vertical velocity will change as the vertical velocity is affected by acceleration / deceleration (and time) -- The correct calculation is: 170/34 = 5 Am i correct?