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A floating ice block is pushed through a displacement images = (15 m)images − (12 m)images along a straight embankment by rushing water, which exerts a force images = (210 N)images − (150 N)images on the block. How much work does the force do on the block during the displacement?

Respuesta :

Answer:

Explanation:

Displacement, [tex]\overrightarrow{d}=15\widehat{i}-12\widehat{j}[/tex]

force, [tex]\overrightarrow{F}=210\widehat{i}-150\widehat{j}[/tex]

Work done is defined as the product of force and the displacement in the direction of force.

[tex]W=\overrightarrow{F}.\overrightarrow{d}[/tex]

[tex]W=\left ( 210\widehat{i}-150\widehat{j} \right ).\left ( 15\widehat{i}-12\widehat{j} \right )[/tex]

W = 3150 + 1800

W = 4950 J

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