Hello everyone, I have a physics question for you all. A cannon fired from a truck at 5m/s. A cannon is fired in the same direction as the cannon. The velocity of the projectile is 50m/s. What angle will provide the greatest (distance in the x-driection) range for the projectile. I have gotten two solution. Using triangles and that both have the same maximum height the best angle is 49 degrees. Using calculus we have come with a best angle of 46.9 degrees. Which is best and why? I believe it is calculus because the calculus version is assuming the cannon fired at the non-45 degrees will have a higher altitude. Therefore ruining the triangles method. Thank you.