Suppose that the swimmer in the figure below has a swimming speed relative to the water of 0.40 m/s, while the speed of the current is 2.2 m/s. If it takes the swimmer 200 s to cross the river, how wide is the river
assuming the current is perpendicular to the swimmer heading, it has nothing to do with the problem. It just means she will land somewhere downstream of the starting point.
distance = speed * time = 0.4 * 200
To find out the width of the river, we can use the formula:
Width = Speed of Current × Time taken to cross the river
In this case, the speed of the current is given as 2.2 m/s, and the time taken to cross the river is given as 200 s.
So, plugging these values into the formula:
Width = 2.2 m/s × 200 s
To find the width, we simply multiply 2.2 m/s by 200 s.
Calculating the multiplication:
Width = 440 m
Therefore, the width of the river is 440 meters.