Answered

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From an elevation of 0.5 m below the surface of the water, a swimmer dives at a rate of 0.25 m/s. What is the depth of the swimmer after 4 minutes?A. -60.5 mB. 60.5 mC. -1.5 mD. 1.5 m

Sagot :

By assuming that the rate is constant and the speed is given by

[tex]\text{speed = }\frac{dis\tan ce}{time}[/tex]

we have that

[tex]0.25\frac{m}{s}=\frac{d}{240s}[/tex]

because 4 minutes is equal to 240 seconds. Then, the distance is given as

[tex]\begin{gathered} d=(0.25\frac{m}{s})(240s) \\ d=60\text{ m} \end{gathered}[/tex]

Therefore, the depth of the swimmer will be 60 meters plus 0.5 meters. Then, the answer is -60.5 meters (option A)

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