6. [-/2.35 Points] DETAILS OSCOLPHYS2016 3.4.P.033. ASK YOUR TEACHER PRACTICE ANOTHER MY NOTES The cannon on a battleship can fire a shell a maximum distance of 42.5 km. (a) Calculate the initial velocity of the shell in meters per second. (Enter the magnitude.) m/s (b) What maximum height in meters does it reach? (At its highest, the shell is above a substantial part of the atmosphere-but air resistance is not really negligible as assumed to make this problem easier. Assume the shell has been fired so as to maximize horizontal distance.) m (c) The ocean is not flat, because the earth is curved. Assume that the radius of the Earth is 6.37 x 10³ km. How many meters lower will its surface be 42.5 km from the ship along a horizontal line parallel to the surface at the ship? m Does your answer imply that error introduced by the assumption of a flat Earth in projectile motion is significant here? (Select all that apply.) The error could be significant compared to the size of a target. The error is insignificant compared to the size of a target. The error is insignificant compared to the distance of travel. The error could be significant compared to the distance of travel.

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