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A person is walking east along river bank path at a speed of 2m/s. A cyclist...
3 400 29. Water traveling along a straight portion of a river normally flows fastest in the middle, and the speed slows to almost zero at the banks. Consider a long straight stretch of river flowing north, with parallel banks 40 m apart. If the maxi- mum water speed is 3 m/s, we can use a quadratic function as a basic model for the rate of water flow x units from the west bank: f(x) x(40 – x). (a) A...
A river flows from west to east with a speed of 3m/s. A boy swims north across the river with a speed of 2m/s relative to the water. (a) What is the speed of the boy relative to the shore? (b) What is the boys direction relative to the shore?
A 230-m-wide river flows due east at a uniform speed of 2.1 m/s. A boat with speed of 7.8 m/s relative to the water leaves the south bank of the river pointed in a direction 35 degrees west of north. What is the magnitude of the boat's velocity relative to the ground (in m/s)? Enter only the numerical part of the answer in the box Question 2 1 pts A 212-m-wide river flows due east at a uniform speed of...
A 200-m-wide river flows due east at a uniform speed of 3.4m/s. A boat with a speed of 8.4m/s relative to the water leaves the south bank pointed in a direction 34o west of north. What is the (a) magnitude and (b) direction of the boat's velocity relative to the ground? Give the direction as the angle of the velocity from due north, positive if to the east and negative if to the west. (c) How long does it take...
A 250-m-wide river flows due east at a uniform speed of 4.0m/s. A boat with a speed of 6.9m/s relative to the water leaves the south bank pointed in a direction 26o west of north. What is the (a) magnitude and (b) direction of the boat's velocity relative to the ground? Give the direction as the angle of the velocity from due north, positive if to the east and negative if to the west. (c) How long does it take...
A 250-m-wide river flows due east at a uniform speed of 2.8m/s. A boat with a speed of 7.7m/s relative to the water leaves the south bank pointed in a direction 31o west of north. What is the (a) magnitude and (b) direction of the boat's velocity relative to the ground? Give the direction as the angle of the velocity from due north, positive if to the east and negative if to the west.
Suppose at one point along the Nile River a ferryboat must travel straight across a 1.22-mile stretch from west to east. At this location, the river flows from south to north with a speed of 2.31 m/s. The ferryboat has a motor that can move the boat forward at a constant speed of 27.1 mph in still water. If the captain points the boat directly at the target location on the east bank of the river, how far downstream will...
A 280-m-wide river flows due east at a uniform speed of 4.4m/s. A boat with a speed of 6.9m/s relative to the water leaves the south bank pointed in a direction 33owest of north. What is the (a) magnitude and (b)direction of the boat's velocity relative to the ground? Give the direction as the angle of the velocity from due north, positive if to the east and negative if to the west. (c) How long does it take for the...
A 236-m-wide river flows due east at a uniform speed of 2.1 m/s. A boat with speed of 7.9 m/s relative to the water leaves the south bank of the river pointed in a direction 37 degrees west of north. What is the magnitude of the boat's velocity relative to the ground (in m/s)? Enter only the numerical part of the answer in the box.
You are walking down a straight path in a park and notice there is another person walking some distance ahead of you. The distance between the two of you remains the same, so you deduce that you are walking at the same speed of 1.17 m/s. Suddenly, you notice a wallet on the ground. You pick it up and realize it belongs to the person in front of you. To catch up, you start running at a speed of 2.75...