Two canoeists in identical canoes exert the same effort paddling and hence maintain the same speed relative to the water. One paddles directly upstream (and moves upstream), whereas the other paddles directly downstream. With downstream as the positive direction, an observer on shore determines the velocities of the two canoes to be −1.2 m/s and + 2.9 m/s, respectively, (a) What is the speed of the water relative to the shore? (b) What is the speed of each canoe relative to the water?
Two canoeists in identical canoes exert the same effort paddling and hence maintain the same speed relative to the water. One paddles directly upstream (and moves upstream), whereas the other paddles directly downstream. With downstream as the positive direction, an observer on shore determines the velocities of the two canoes to be −1.2 m/s and + 2.9 m/s, respectively, (a) What is the speed of the water relative to the shore? (b) What is the speed of each canoe relative to the water?
Solution Summary: The author explains how the speed of the water relative to the shore is 0.85m/s.
Two canoeists in identical canoes exert the same effort paddling and hence maintain the same speed relative to the water. One paddles directly upstream (and moves upstream), whereas the other paddles directly downstream. With downstream as the positive direction, an observer on shore determines the velocities of the two canoes to be −1.2 m/s and + 2.9 m/s, respectively, (a) What is the speed of the water relative to the shore? (b) What is the speed of each canoe relative to the water?
A student is walking with a constant speed of ??1meters per second along High Street and sees a puddle ??1 meters ahead of her. A bus driver is driving parallel to the student along High Street as well. At the moment the bus is ??2meters behind the student, the bus driver decides he wants to splash he student with water by driving over the puddle as the student walks past. Determine the expression for the speed that the bus must have in terms of the given variables such that the bus and the student reach the puddle at the same time to splash the student.
Three cars, A,B, and C, are moving along a straight section of highway. If the velocity of A relative to B is +60m/s and the velocity of A relative to C is +20m/s, then what is the velocity of C relative to B?
A motorboat is crossing a river that flowseastward at a speed of 5 km/h. If the boat needsto maintain its northward course and a speed of10 km/h relative to an observer standing on theriverbank, what should be its velocity relative tothe river. (Hint: Solve for Vbr)
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