A River has a steady speed of 0.500 m/s. A student swims upstream a distance of 1.00 km and swims back to the startingpoint. (a) If the student can swim at a speed of 1.20 m/s in still water, how long does the trip take? (b) How much time is required in still water for the same length swim? (c) Intuitively, why does the swim take longer when there is a current?

A River has a steady speed of 0.500 m/s. A student swims upstream a distance of 1.00 km and swims back to the startingpoint. (a) If the student can swim at a speed of 1.20 m/s in still water, how long does the trip take? (b) How much time is required in still water for the same length swim? (c) Intuitively, why does the swim take longer when there is a current?

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter3: Motion In Two Dimensions

Section: Chapter Questions

Problem 7OQ: A projectile is launched on the Earth with a certain initial velocity and moves without air...

See similar textbooks

Related questions

Q: A jetliner travelling northward is landing with a speed of 69m/s . Once the jet touches down it has…

Q: For what kinds of motion are the instantaneous and average velocities equal?

A: instantaneous velocity and average velocity

Q: An object has an initial velocity of 10 m/s and an acceleration of 3 m/s squared. How long will it…

A: The acceleration is defined as the rate of change of velocity.

Q: A river has a constant current of 3 kilometers per hour. At what angle to a boat dock should a…

A: Current speed, v1 = 3 km/hr Speed of the boat, v2 = 25 km/hr Let v be the resultant speed of the…

Q: If an object moves from point A to point B in the negativex-direction, then the acceleration is:

Q: A boat is cruising in a straight line at a constant speed of 2.6 m/s when it is shifted into…

A: The initial speed of the ship is 2.6 m/s after shifting into neutral the ship coasted for 12 m and…

Q: If a subway train is moving to the left (has a negative velocity) and then comes to a stop, what is…

A: Given: a subway train moving left

Q: Two trains, one travelling at 20.8m/s and the other at 76.2 m/s, are headed toward one another along…

Q: man Can swim ab as Peed of 3km/he in still water he wants to cross 500 m wid river flowing at be an…

A: Given: man speed, vm= 3 km/h river width, d=500 m= 12km river…

Q: An airliner must reach a speed of 110 m/s to take off. If the available runway is 2.4 km and the…

A: According to Bartleby guidelines, I can answer the very first question in case of multiple…

Q: The speed of an object is decreasing. This means а. The velocity and acceleration of the object are…

A: The speed of object is decreasing. This means that the velocity and acceleration of object are in…

Q: The science lecture theatre of a college is 10m wide and has a door at a corner. A science teacher…

Q: On a day when the wind is blowing toward the south at 2 m/s, a runner jogs west at 1.5 m/s. what is…

Q: A jetliner with an airspeed of 1000 km/h sets out on a 1500 km flight due south. To maintain a…

A: Given data: The total travel distance is d=1500 km The destination time is t=110 min Calculate the…

Q: A football player wishes to punt a football 65 yards and have a hang time of 5 seconds. What initial…

Q: Consider an airplane whose takeoff speed is 220 km/h and that takes 15 s to take off at sea level.…

A: An aircraft will takeoff when the lift is equal to the total weight,

Q: The world-record time for the 100 m dash is approximately 10 s. Given this, is it reasonable to…

A: “Since you have asked multiple questions which are not linked with each other, we will solve the…

Q: The velocities of commuter trains A and B are as shown. Knowing that the speed of each train is…

A: Velocity of A is 66 km/hr in negative x direction. In vector form we can write it as,

Q: In which of the following conditions would the average velocity vector over an interval equal to the…

A: The average velocity is the ratio of displacement and time. Consider the body is moving along a…

Q: Two trains travel in the opposite direction, leaving each of the opposite stations which call…

A: Let the two trains meet after time t. Thus, after time, t, the total distance travelled by the two…

Q: a certain handgun with a muzzle velocity of 325 m/s is fired straight up. neglecting air resistance,…

A: Initial velocity of bullet (u) = 325 m/sTo find : time taken by the bullet to fall back to the head…

Q: After jumping, a skydiver descends vertically towards the ground, with the parachute open, at a…

A: Here speed of skidiver is contant and it move 12.5m to reach the ground after dropping a coin∴ time…

Q: A swimmer heading directly across a river 200 m wide reaches the opposite bank in 1 min 40 s. She is…

A: Given : Width of the river d=200 m Time taken to reach at the other end of the river t=1 min 40…

Q: A 0.20-km wide river has a uniform flow speed of 3.0 m/s toward the east. A boat with a speed of 8.0…

A: Given values - Width (d) =0.20 km =200 mRiver speed (Vr) =3 msBoat speed (V/0 = 8ms

Q: o of hikers is to travel x km by bus at an average speed of 48 km/h to an A group unknown…

A: distance traveled by bus = x Distance covered while walking = x Time for lunch and rest = 2 hours…

Q: Starting at a height of 8 m, and fired upwards at 11 m/s, how much time is projectile in the air…

A: Given - Displacement of the projectile, y =- 8 m Initial velocity , u = 11 m/s Acceleration due to…

Q: From a height of 70 ft above ground, an item is flung vertically upward. The object’s starting…

A: The height of the item from the ground, h=70 ft The initial velocity of the item from the height,…

Q: A boat is cruising in a straight line at a constant speed of 2.8 m/s when it is shifted into…

Q: A boat can travel 2.3 m/s in still water. If the boat travels across a stream whose current is 1.2…

A: Given v1 = 2.3m/s v2 = 1.2 m/s

Q: What is the average velocity of a car that travels from mile marker 32, to mile marker 214 on I-10…

Q: A man can row at 8.5 mi/hr in still water. If velocity of stream is 1.5 mi/hr, at what angle with…

Q: A skydiver jumped out of a plane to shoot a skydiving scene for a certain spy movie. At what point…

A: let t be the time to open the parachute.

Q: A person walks up a stalled 15-m-long escalator in 90 s. When standing on the same escalator, now…

A: The speed of the walking person is The speed of the escalator is

Q: A man and a parachute are falling with a speed of 173 ft/sec when the parachute opens and the speed…

Q: The operator of a boat wishes to cross a 5-km wide river that is flowing to the east at 10 m/s. He…

A: Given:River is ,d = 5 m wideTime taken to go to the opposite point on shore, t = 15 min…

Q: Under what condition is average velocity equal to the average of the object's initial and final…

A: If v,u,s and a are final velocity, initial velocity, displacement and constant acceleration of any…

Q: A truck and a car travel on a straight road with equal speeds of 72km / h, when the car is 5 m…

A: Let a and b denote the distances between the car and the truck just before and just after the car’s…

Q: A weather balloon is released and rises vertically such that its distance s(1) above the ground…

A: Since you have asked multiple questions, we will solve the first question for you. If you want a…

Q: An airplane needs to reach a velocity of 184 km/h to take off. On a 2000 m runway, what is the…

A: The initial velocity of airplane is zero.

Q: A rugby player passes the ball 9.75 m across the field, where it is caught at the same height as it…

Q: A player passes a basketball to another player who catches it atthe same level from which it was…

A: Consider that the basketball is thrown with an angle θ from the horizontal axis. The initial speed…

Q: The body, with an initial speed of 2 m/s, began to slide along an inclined plane. For l0s, it passes…

Concept explainers

Distance and Speed

The speed, distance and time relation forms the basis of study of motion. You will need these concepts in the study of Mechanics. This concept is applicable for students who are studying the following courses –

Question

A River has a steady speed of 0.500 m/s. A student swims upstream a distance of 1.00 km and swims back to the starting
point.

(a) If the student can swim at a speed of 1.20 m/s in still water, how long does the trip take? (b) How much time is required in still water for the same length swim?

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

Step 2

Step 3

Step 4

Step 5

Step 6

Step 7

Step 8

Trending now

This is a popular solution!

Step by step

Solved in 8 steps with 7 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.

Similar questions

A person walks up a stalled 15-m-long escalator in 90 s. When standing on the same escalator, now moving, the person is carried up in 60 s. How much time would it take that person to walk up the moving escalator? Does the answer depend on the length of the escalator?
Consider an airplane whose takeoff speed is 220 km/h and that takes 15 s to take off at sea level. For an airport at an elevation of 1600 m (such as Denver), determine (a) the takeoff speed, (b) the takeoff time, and (c) the additional runway length required for this airplane. Assume constant acceleration for both cases.
The body, with an initial speed of 2 m/s, began to slide along an inclined plane. For l0s, it passes along an inclined plane of 50 m, and then along a horizontal plane to a stop of 90 m. Assuming the body movement in each of the sections to be equally variable, determine the speed of the body at the end of the inclined plane, acceleration on the inclined and horizontal sections of the path, and average speed along the entire path , body movement time.
Under what condition is average velocity equal to the average of the object's initial and final velocity?
A projectile is launched on the Earth with a certain initial velocity and moves without air resistance. Another projectile is launched with the same initial velocity on the Moon, where the acceleration due to gravity is one-sixth as large. How does the range of the projectile on the Moon compare with that of the projectile on the Earth? (a) It is one-sixth as large. (b) It is the same. (c) It is 6 times larger. (d) It is 6 times larger. (e) It is 36 times larger.
At one instant, a bicyclist is 50 m due east of a park's flagpole, going due south with a speed of 18 m/s. Then, 13 s later, the cyclist is 45 m due north of the flagpole, going due east with a speed of 13 m/s. For the cyclist in this 13 s interval, what is the displacement (m) and direction north of west, average velocity (m/s) and direction north of west and the average acceleration and direction north of east?
A jetliner, travelling northward, is landing with a speed of 69 m/ s. Once the jet touches down, it has 750 m of runway in which to reduce its speed to 6.1 m/ s. Compute the average acceleration (magnitude and direction) of the plane during landing.
man Can swim ab as Peed of 3km/he in still water he wants to cross 500 m wid river flowing at be an angle 2 km/hr He keep himself always of 120° with while swimming. the river flow A) evaluate the time he babes to cross the river B) at what what Paint on the opposite bank will he arrive
Old faithful geyser in Yellowstone national park shoots water hourly to a height of 40 meters. With what velocity does the water leave the ground?
In reaching her destination, a backpacker walks with an average velocity of 1.48 m/s, due west. This average velocity results, because she hikes for 6.55 km with an average velocity of 2.75 m/s, due west, turns around, and hikes with an average velocity of 0.513 m/s, due east. How far east did she walk?
Two trains travel in the opposite direction, leaving each of the opposite stations which call station A and station B. The train A departs at a constant speed of 150[km/h], while the train B leaves from rest with constant acceleration of 1,5[m/s]. HOW far and at what time do the two trenes intersect? Consider that the two stations are separated by a distance of 10[km].
Most important in an investigation of an airplane crash by the U.S. National Transportation Safety Board is the data stored on the airplane’s flight-data recorder, commonly called the “black box” in spite of its orange coloring and reflective tape.The recorder is engineered to withstand a crash with an average deceleration of magnitude 3450 g during a time interval of 6.49 ms. In such a crash, if the recorder and airplane have zero speed at the end of that time interval, what is their speed at the beginning of the interval?