The purpose of the two studies presented in this paper is to establish validity evidence for the Sport Multidimensional Perfectionism Scale-2 (Sport-MPS-2: Gotwals & Dunn, 2009). Studies 1 and 2 are respectively focused on the production of structurally-related and external validity evidence.
The horizontal velocity of a projectile is constant (a never changing in value), There is a vertical acceleration caused by gravity; its value is 9.8 m/s/s, down, The vertical velocity of a projectile changes by 9.8 m/s each second, The horizontal motion of a projectile is independent of its vertical motion.
As you can see momentum vs. time graph and velocity vs. time graphs of the system are similar because momentum is directly proportional to the velocity. Example The graph given below belongs to an object having mass 2kg and velocity 10m/s.t moves on a horizontal surface. If a force is applied to this object between (1-7) seconds find the velocity of the object at 7. Second. Area under the graph gives us impulse. First, we find the total impulse with the help of graph given above then total impulse gives us the momentum change.