If a river is 300 meters wide and the current flows at 2 m/s, how long will it take a swimmer to cross the river if he swims at a speed of 1 m/s perpendicular to the current?
Practice Questions
1 question
Q1
If a river is 300 meters wide and the current flows at 2 m/s, how long will it take a swimmer to cross the river if he swims at a speed of 1 m/s perpendicular to the current?
300 seconds
150 seconds
200 seconds
100 seconds
Time to cross = Width / Speed across = 300 m / 1 m/s = 300 seconds.
Questions & Step-by-step Solutions
1 item
Q
Q: If a river is 300 meters wide and the current flows at 2 m/s, how long will it take a swimmer to cross the river if he swims at a speed of 1 m/s perpendicular to the current?
Solution: Time to cross = Width / Speed across = 300 m / 1 m/s = 300 seconds.
Steps: 6
Step 1: Identify the width of the river, which is 300 meters.
Step 2: Identify the speed of the swimmer, which is 1 meter per second.
Step 3: Use the formula for time to cross the river: Time = Width / Speed.
Step 4: Plug in the values: Time = 300 meters / 1 meter per second.
