A small boat is crossing a lake on a windy day. During some interval of time, the boat undergoes the given displacement Δ?⃗. Δ?⃗=(3.11 m)ı̂+(2.77 m)ȷ̂ During the same interval of time, the wind exerts the given constant force ?⃗ on the boat. ?⃗=(275 N)ı̂−(117 N)ȷ̂ What is the total work done on the boat by the wind over this period of time? What is the angle between the direction of the wind force and the direction of the boat's motion during this time interval?

College Physics
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ISBN:9781285737027
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter5: Energy
Section5.1: Work
Problem 5.1QQ: In Figure 5.5 (a)-(d), a block moves to the right in the positive x-direction through the...
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A small boat is crossing a lake on a windy day. During some interval of time, the boat undergoes the given displacement Δ?⃗.

 

Δ?⃗=(3.11 m)ı̂+(2.77 m)ȷ̂

During the same interval of time, the wind exerts the given constant force ?⃗ on the boat.

 

?⃗=(275 N)ı̂−(117 N)ȷ̂

What is the total work done on the boat by the wind over this period of time?

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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