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The nile river has a current of 2 m/s south.Tim decides to go to a row.Sandy...

The nile river has a current of 2 m/s south.Tim decides to go to a row.Sandy sits on thriver bank and sees Tim rowing by at 4m/s North.What is the actual speed that Tim is rowing the boat with respect to the water?

a)2 m/s South

b)2 m/s North

c)4 m/s South

d)6 m/s North

A 50 kg crate rests on the floor of a house.The coefficient of a static friction ia 0.75 and the coefficient of kinetic friction is 0.45.If we want to determine the horizontal force require to just start the crate moving.It is

a)378N

B)221 N

c)37.1 N

d)22.5 N

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Answer #1

Piver and North South peed bout wrt water Relative speedV ot Negative sign oluf Cont water oppo.uk. direti 6 mse North ←, when Unde is a nut looY The torces aiting upon +he vuate is Force opplued o moe the boy when +ne box is at,eA t. oto jst start Stihc Jsuchon work he mofisn We have -to oventome ophisn A is tomet as it is g to oven come skrhc neater -than miumumHope this helps.

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