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Describe possible future directions for preventing rust I only seem to be able to find current technologies - (hot-dip galvanising, electro-galvanising, passivating etc.) but nothing about what they're thinking of doing in the future. Help please?

A projectile is fired at a velocity of 50ms-1 at an angle of 30 degreest to the horizontal. Determine the range of the projectile.. I don't seem to be able to get any of the equations right, I don't think I'm subbing the right numbers into the right places... Any help is appreciated...