Emily jogs due South at a speed of 4.8 m/s while enjoy riding on a cruise ship t

Question

Emily jogs due South at a speed of 4.8 m/s while enjoy riding on a cruise ship that travels due north at 15.6 m/s. Her resultant velocity is ''. ( include magnitude, unit and the direction written in words: North, South, East or West)

A train carrying coal leaves the coal warehouse and travels 159 km due West to the electric power plant. The train stops for 3 hours while the coal is removed, then the train travels 84 km East on the same track. The resultant displacement of the train is ''. ( Include the magnitude, the unit and the direction: North, South, East or West)

(This data will be used for questions 3,4,5 and 6) A river that is 47 m wide flows due South with a current of 6.4 m/s. Jeff is in his boat on the Western bank and is aimed directly across the river. His motor has a speed of 3.7 m/s. The magnitude of the resultant velocity is '' ( Include the number with correct sig figs and the unit)

Explanation / Answer

a)15.6-4.8 = 10.8 m/s due north. b)159-84 = 75km due west. c)

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