The following simulation let you compare projectiles with different initial conditions.
There are 4 different mode:
1. vx: same Vy, different vx (vx0,2*vx0,3*vx0,4*vx0)
2. vy: same Vx, different vy (vy0,2*vy0,3*vy0,4*vy0)
3. v:  same angle,different speed (v0,2*v0,3*v0,4*v0)
4. cta: same speed,different angle(cta0,2*cta0,3*cta0,4*cta0)

You can use mouse to drag red arrow (velocity vector) to change it's initial conditions.

Does projectile fall to the ground at the same time?
What are the distances away from the initial position when projectile hit the ground?
... Enjoy it!

translate strings in simulation to different language format before download
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