The water in a river flows downstream at 3.0 M/s. A boat is motoring upstream against the flow at 5.0 m/s. What is the boats speed of relativity to the riverbank/
A. 8.0 M/s
B. 5.0 M/s
C. 3.0 M/s
D. 2.0 m/s
Answer: D. 2.0 m/s
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A) 20. V B) 0.20 V C) 5.0 V D) 0.50 V E) zero
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(a) 0 (b) 1 (c) 2 (d) 3