4) You throw a rock off the bridge. The initial velocity of the rock is 5 m/s at an angle 20 above the horizontal. It takes 15 seconds for the rock to hit the water below the bridge. How fast is the rock traveling before it hits the water? 5 m/s 20 degrees above horizontal Water Show chart: Ax Vox FX ax t Y A Nov ay t 6) A cannon is fired at an angle of 40 above the horizontal and has a maximum height of 200m. What is the initial speed of the projectile? Height, H Show chart: X Y By 4x Vox Not ax 3555+