Hello I am working on projectile motion and I am really stuck
I have been shown this graph:
And the parabola shape is meant to represent the trajectory and the bold line is a vector which is meant to represent initially velocity. We are ignoring wind resistance so the vertical acceleration is affected by gravity and the horizontal acceleration is 0
I have a few questions and I really appreciate it if anyone can help me
1. is the vector line and the 2 lines it projects onto the (horizontal and vertical) axis measured as velocity e.g. in m/s instead of m
2. If it is measured as a velocity say m/s then wouldn’t that mean it would have multiple horizontal velocities which doesn’t make sense because it should be constant.
For example I made up these values
As you can see there are two horizontal velocities (5 and 10) which shouldn’t be because it should be constant
3. Why is it that the parts projected from the velocity line represent the horizontal and vertical velocity?