A small boat is crossing a lake on a windy day. During some interval of time, the boat undergoes the given displacement Δ?⃗ .Δr→. Δ?⃗ =(3.19 m)ı̂ +(2.89 m)ȷ̂ Δr→=(3.19 m)ı^+(2.89 m)ȷ^   During the same interval of time, the wind exerts the given constant force ?⃗ F→ on the boat. ?⃗ =(261 N)ı̂ −(125 N)ȷ̂

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Static and Kinetic Friction

Kinetic friction comes into existence when there are moving surfaces means in other words we can say that the force which comes into existing between moving surfaces is known as kinetic friction.