Question

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

Answer 1

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

`\text{speed = }(dis\tan ce)/(time)`

we have that

`0.25(m)/(s)=(d)/(240s)`

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

`\begin{gathered} d=(0.25(m)/(s))(240s) \\ d=60\text{ m} \end{gathered}`

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