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27 Nov 2019
A 270-m-wide river flows due east at a uniform speed of 4.4 m/s. Aboat with a speed of 8.2 m/s relative to the water leaves the southbank pointed in a direction 30o west of north. What is the (a)magnitude and (b) direction of the boat's velocity relative to theground? Give the direction as the angle of the velocity from duenorth, positive if to the east and negative if to the west. (c) Howlong does it take for the boat to cross the river?
A 270-m-wide river flows due east at a uniform speed of 4.4 m/s. Aboat with a speed of 8.2 m/s relative to the water leaves the southbank pointed in a direction 30o west of north. What is the (a)magnitude and (b) direction of the boat's velocity relative to theground? Give the direction as the angle of the velocity from duenorth, positive if to the east and negative if to the west. (c) Howlong does it take for the boat to cross the river?
Collen VonLv2
25 Feb 2019
