
Q2 1. Kinematics of swimming A swimmer swims directly across a river of width L that...
A swimmer, capable of swimming at a speed of 1.90m/s in still water (i.e., the swimmer can swim with a speed of 1.90m/s relative to the water), starts to swim directly across a 1.93-km-wide river. However, the current is 1.24m/s, and it carries the swimmer downstream. (a) How long does it take the swimmer to cross the river? (b) How far downstream will the swimmer be upon reaching the other side of the river?
A swimmer, capable of swimming at a speed of 1.02 m/s in still water (i.e., the swimmer can swim with a speed of 1.02 m/s relative to the water), starts to swim directly across a 2.96-km-wide river. However, the current is 0.550 m/s, and it carries the swimmer downstream. (a) How long does it take the swimmer to cross the river? (b) How far downstream will the swimmer be upon reaching the other side of the river?
A swimmer, capable of swimming at a speed of 1.60 m/s in still water (i.e., the swimmer can swim with a speed of 1.60 m/s relative to the water), starts to swim directly across a 2.67-km-wide river. However, the current is 1.40 m/s, and it carries the swimmer downstream. (a) How long does it take the swimmer to cross the river? (b) How far downstream will the swimmer be upon reaching the other side of the river? (Write on paper)
A swimmer, capable of swimming at a speed of 1.5 m/s in still water (i.e., the swimmer can swim with a speed of 1.5 m/s relative to the water), starts to swim directly across a 3.0-km-wide river. However, the current is 0.91 m/s, and it carries the swimmer downstream. (a) How long does it take the swimmer to cross the river? Incorrect: Your answer is incorrect. s (b) How far downstream will the swimmer be upon reaching the other side...
A swimmer heads directly across a river, swimming at her maximum speed of 1.60 m/s relative to the water. She arrives at a point 40.0 m downstream from the point directly across the river, 67.0 m wide. In what direction (as an angle relative to a direct line across the river) should the swimmer aim instead, so that she arrives at the point directly opposite her starting point?
A 70 m wide river flows from north to south at a speed of 3.2 m/s. A swimmer swims relative to the water at a rate of 4.6 m/s aiming across the river at an angle of 24 degrees north of east. What is the speed of the swimmer with respect to the shore? How far downstream (south), from a point directly across the river, does the swimmer hit the shore?
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A swimmer heading directly across a river 200 m wide reaches the opposite bank in 6 min 40 s, during which time she is swept downstream 480 m. How fast can she swim in still water? What is the speed of the current?
A swimmer is able to swim at a speed of 0.92 m/s in still water. (a) How long does it take the swimmer to go a distance of 1590 m in still water? Call this time t1.(b) The swimmer then decides to swim the same distance in a river having a current with a speed of 0.53 m/s. How long does this take if she swims with the current? Call this time t2. (c) How long does it take her...
A swimmer attempts to reach the other side of the Fraser River, which has a width of 35m near Hell's Gate1. This swimmer can swim at 11.6m/s, but Fraser River has a downstream current moving at roughly 0.50m/s to the west. a) If the swimmer heads straight north for the other side of Fraser River, how long will that take? b) If there were NO current, would the swimmer take just as long as in question "a"? Why or why...
A swimmer is caught in a riptide 300 m directly off the Jersey Coast. The current is flowing at 1 m/s, 30 degrees from the shoreline and to where the swimmer is located. The swimmer determines that he has the strength to swim for 20 minutes and thus, must follow the shortest path. How should he direct himself with respect to the shoreline and how fast does he need to swim? Blue: 300 m Red: Current Hegre Yellow: Shoreline Star:...