A river is 300 m wide. If a person swims across the river at a speed of 2 m/s and the river flows at 1 m/s, how long will it take to cross the river? (2020)
Practice Questions
1 question
Q1
A river is 300 m wide. If a person swims across the river at a speed of 2 m/s and the river flows at 1 m/s, how long will it take to cross the river? (2020)
150 s
100 s
200 s
300 s
Time = Distance / Speed. The effective speed across the river is 2 m/s. Time = 300 m / 2 m/s = 150 s.
Questions & Step-by-step Solutions
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Q
Q: A river is 300 m wide. If a person swims across the river at a speed of 2 m/s and the river flows at 1 m/s, how long will it take to cross the river? (2020)
Solution: Time = Distance / Speed. The effective speed across the river is 2 m/s. Time = 300 m / 2 m/s = 150 s.
