1.

A deep sea diver swari 30 m due east then 120 m deep down and finally 40 m due to south to reach awrecked ship. How far is the wrecked ship form the diver's starting point.​

Answer»

Hyy Dude

The 3 swim distances are mutually PERPENDICULAR, and therefore can be treated as the components of a displacement vector in CARTESIAN COORDINATES. Then the net distance is the magnitude of the displacement vector:

d = (30i - 120j + 40k) m

d = sqrt[(30)^2 + (-120)^2 + (40)^2] m = 130 m

Hope it's helps you



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