A small boat is crossing a pond on a windy day. During some interval of time, the boat undergoes the given displacement Ar: Ař = (3.50 m)i + (2.85 m)ĵ During the same interval of time, the wind exerts the given force F on the boat: F = (260 N) – (135 N)Ĵ (a) What is the total work done on the boat by the wind over this period of time? (b) What is the angle between the direction of the wind force and the direction of the boat's motion during this time interval?

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Chapter1: Units, Trigonometry. And Vectors
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A small boat is crossing a pond on a windy day. During some interval of time, the boat undergoes the given
displacement Ar:
Ař = (3.50 m)i + (2.85 m)ĵ
During the same interval of time, the wind exerts the given force F on the boat:
F = (260 N) – (135 N)Ĵ
(a) What is the total work done on the boat by the wind over this period of time?
(b) What is the angle between the direction of the wind force and the direction of the boat's motion during this time
interval?
Transcribed Image Text:A small boat is crossing a pond on a windy day. During some interval of time, the boat undergoes the given displacement Ar: Ař = (3.50 m)i + (2.85 m)ĵ During the same interval of time, the wind exerts the given force F on the boat: F = (260 N) – (135 N)Ĵ (a) What is the total work done on the boat by the wind over this period of time? (b) What is the angle between the direction of the wind force and the direction of the boat's motion during this time interval?
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