Question

A sea otter swims toward an inlet with a speed of 5.0 m/s as a current of1.0 m/s flows in the opposite direction. How long will it take the sea otterto swim 100. m?*

Answer 1

Given:

The speed of sea otter is

`v_s=5\text{ m/s}`

The speed of the current is

`v_c=\text{ 1 m/s}`

in the opposite direction.

The distance is d = 100 m

To find the time taken by sea otter to cover a distance d = 100 m.

Step-by-step explanation:

The total speed of sea otter is

`\begin{gathered} v_=v_s-v_c \\ =5-1 \\ =4\text{ m/s} \end{gathered}`

The time taken will be

`\begin{gathered} t=(d)/(v) \\ =\frac{100\text{ m}}{4\text{ m/s}} \\ =25\text{ s} \end{gathered}`

Thus, the time taken is 25 s to swim 100 m.