Question

The current in a river is 1.0 meters/second. Britney swims 300 meters against the current. If she normally swims with a speed of 2.0 meters/second in still water, how long does it take her to complete the trip?

Answer 1

Answer:

t = 300 seconds

Explanation:

It is given that,

Speed of the current in the river, $v_1=1\ m/s$

Distance covered by Britney, d = 300 m

Speed of Britney, $v_2=2\ m/s$

It is mentioned that Britney swims against the current. Her downstream speed is given by :

$v=v_2-v_1$

$v=2-1$

v = 1 m/s

Let t is the time taken by her to complete her trip. t is given by :

$t=\dfrac{d}{v}$

$t=\dfrac{300\ m}{1\ m/s}$

t = 300 seconds

So, the time taken by her the complete her trip is 300 seconds. Hence, this is the required solution.

Answer 2

The answer is 300s I believe.