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Sam's job at the amusement park is to slow down and bring to a stop the boats in the log ride.Part AIf a boat and its riders have a mass of 800 kg and the boat drifts in at 1.4 m/s how much work does Sam do to stop it?

Respuesta :

Given data

*The given mass is m = 800 kg

*The given speed is v = 1.4 m/s

The formula for the work done by the Sam to stop it is given as

[tex]W=\frac{1}{2}mv^2[/tex]

Substitute the known values in the above expression as

[tex]\begin{gathered} W=\frac{1}{2}(800)(1.4)^2 \\ =784\text{ J} \end{gathered}[/tex]

Hence, the work done by the Sam to stop it is W = 724 J

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