The following picture shows trajectory for two projectiles.
[img]http://www.phy.ntnu.edu.tw/ntnujava/index.php?action=dlattach;topic=1232.0;attach=1387;image[/img]
If [color=red]Vx, Vy[/color] and [color=blue]Vx,Vy[/color] are velocity for two projectiles.
Which of the following one is correct?
A. [font=Verdana]Vx[/font]=2[color=blue]Vx[/color], [font=Verdana]Vy[/font]=2[color=blue]Vy[/color]
B. [font=Verdana]Vx[/font]=[color=blue]Vx[/color], [font=Verdana]Vy[/font]=2[color=blue]Vy[/color]
C. [font=Verdana]Vx[/font]=\sqrt{2}[color=blue]Vx[/color], [font=Verdana]Vy[/font]=\sqrt{2}[color=blue]Vy[/color]
D. [font=Verdana]Vx[/font]=[color=blue]Vx[/color], [font=Verdana]Vy[/font]=\sqrt{2}[color=blue]Vy[/color]