What is the speed of the boat in still water


Asked by wiki @ in Physics viewed by 501 People


The speed of a boat in still water is 20 mph. it travels from one pier to another with the current in 4 hours and back against the current in 6 hours and 40 minutes. if the distance between piers is 100 miles, what is the speed of the current

Answered by wiki @


The answer is, "the speed of the current is 5 miles per hour."

To calculate the speed of the current,
let's assume speed of current =  xmph. Time taken to travel from one pier to another with the current = 100/(20+x)h


But the time taken to travel from one pier to another with the current, which is given is = 4 hours. So,  4=100/(20+x) 80+4x = 100

4x = 20

x = 5 Thus, the speed of the current is 5 miles per hour.

Do you know the better answer?

Latest questions in Physics

Como hacer un angulo de 120 grados con transportador

Asked by wiki @ in Matemáticas viewed by 383 persons


Dibujo de angulo de 120 grados

Cuales son los mayores problemas que tiene la familia hoy

Asked by wiki @ in Religión viewed by 226 persons


Cuales son los mayores problemas que tiene la familia hoy?

Argumento de la obra amigo se escribe con h

Asked by wiki @ in Castellano viewed by 198 persons


Resumen de la obra amigos se escribe con h

Preguntas y respuestas de mi planta de naranja lima

Asked by wiki @ in Arte viewed by 1135 persons


Ayudenme con estas preguntas porfavor "MI PLANTA DE NARANJA-LIMA" CUESTIONARIO PARA EVALUACIÓN PRIMERA PARTE 1.- ¿Cuál es el título del libro que leíste para la clase de DLI? 2.- ¿Cuál …

Para que sirven los numeros de oxidacion

Asked by wiki @ in Química viewed by 272 persons


Para qué se usan los numeros de oxidacion y qué son?

Tu eres mi persona grey's anatomy capitulo

Asked by wiki @ in Latín / Griego viewed by 107 persons


Alguien sabe en que capitulo Cristina Yang le dice a Meredith Grey que es "su persona" (Serie: Greys Anatomy)​

En qué otros casos se emplea la balanza

Asked by wiki @ in Castellano viewed by 306 persons


En que otros casos se emplea la balanza?

Roses are red violets are blue and so are you

Asked by wiki @ in English viewed by 177 persons


Read this poem: Roses are red, Violets are blue; Sugar is sweet, And so are you. What is the rhyme scheme of the poem? ABCD ABAB ABCB AABB

Condición necesaria para vivir y trabajar en paz

Asked by wiki @ in Informática viewed by 201 persons


Condición necesaria para vivir y trabajar en paz?

Que fue parte de la cotidianidad popular

Asked by wiki @ in Historia viewed by 96 persons


Fue parte de la cotidianidad popularde pueblo durante la revolucion mexicana

A que se dedicaban los criollos

Asked by wiki @ in Ciencias Sociales viewed by 113 persons


¿A que se dedicaban los criollos en la época colonial ?

Como se llama la primera cancion de ozuna

Asked by wiki @ in Musica viewed by 216 persons


¿Cual fue la primera canción de ozuna?

What are some functions of lipids in the body chegg

Asked by wiki @ in Chemistry viewed by 101 persons


What is an important function of lipids in the body

Palabras en ingles que no significan lo mismo en español

Asked by wiki @ in Inglés viewed by 239 persons


50 palabras en ingles y traducidas en español pofaa

De que region natural hay mas plantas y animales

Asked by wiki @ in Geografía viewed by 168 persons


De qué región natural identificaron más plantas y animales geografía ​

Todos los mensajes publicitarios tienen los mismos efectos

Asked by wiki @ in Castellano viewed by 220 persons


Todos los mensajes publicitarios tienen los mismos efectos por que

Que tipo de clima suelo y vegetacion presenta la brea

Asked by wiki @ in Ciencias Sociales viewed by 514 persons


¿que tipo de clima , suelo y vegetación prenta la Brea ?

Cuál es la temperatura máxima anual de toronto

Asked by wiki @ in Geografía viewed by 200 persons


Cuál es la temperatura máxima anual de Toronto?​

Ventajas y desventajas de la migracion venezolana al peru

Asked by wiki @ in Castellano viewed by 187 persons


Ventajas y desventajas de la migracion venezolana

The cpi is a measure of the overall cost of

Asked by wiki @ in Business viewed by 93 persons


The cpi is a measure of the overall cost of the goods and services bought by __________. a a typical consumer, and the cpi is computed and reported by the …

Fracciones con denominador 10 100 y 1000

Asked by wiki @ in Matemáticas viewed by 449 persons


Las fracciones que tienen como denominador 10, 100, 1000, 10000 etc. son: comunes? quebrados? decimales? multiplos?

Como sacar el promedio final de calificaciones

Asked by wiki @ in Matemáticas viewed by 185 persons


Como sacar el promedio de calificaciones de primaria? , .

Buscar el significado de las siguientes palabras

Asked by wiki @ in Ciencias Sociales viewed by 259 persons


Buscar el significado de las siguientes palabras

Cuantos metros hay en 3hm 5dm 4m y 6 cm

Asked by wiki @ in Matemáticas viewed by 632 persons


Cuantos metros hay en 3hm, 5Dm,4M y 6cm

Para que nos puede servir el calor

Asked by wiki @ in Geografía viewed by 147 persons


Para que nos sirve el calor?

Which theorist published research related to the psychology of personality

Asked by wiki @ in Social Studies viewed by 80 persons


Which theorist published research related to the psychology of personality?

Como era la vestimenta de los olmecas

Asked by wiki @ in Historia viewed by 85 persons


Como era la vestimenta de los Olmecas?

Mas vale pajaro en mano que 100 volando

Asked by wiki @ in Castellano viewed by 238 persons


Cual es el significado del refrán ''más vale pájaro en mano que cien volando''

Instructivo para hacer un instrumento musical para niños de primaria

Asked by wiki @ in Castellano viewed by 184 persons


Instructivo para hacer un instrumento musical para niños de primaria

Que poner en conocimientos generales en una solicitud de empleo

Asked by wiki @ in Ciencias Sociales viewed by 100 persons


Funciones de oficina que domina solicitud de empleo ejemplos

Most viewed questions in Physics


The freezing point of water is the same as its

Asked by wiki @ in Physics viewed by 641 persons

The freezing point of water is the same as its a. melting point. b. boiling point. c. sublimation point. d. …

Which state of matter have no definite shape or volume

Asked by wiki @ in Physics viewed by 592 persons

Which state(s) of matter have no definite shape or volume??

Where is most of the mass of an atom located

Asked by wiki @ in Physics viewed by 586 persons

Explain where most of the mass of an atom is located. Also, explain why some particles that make up the …


Constellations rise in the ____ and set in the ____

Asked by wiki @ in Physics viewed by 557 persons

The sun, moon, planets and stars rise in the ____ and set in the ____.

What is the name of the fccla national outreach program

Asked by wiki @ in Physics viewed by 544 persons

What is the name of the National Outreach Project in FCCLA?

Gel electrophoresis sorts dna molecules on the basis of their

Asked by wiki @ in Physics viewed by 542 persons

Gel electrophoresis sorts dna molecules on the basis of their


Can you heat up a paper plate in the microwave

Asked by wiki @ in Physics viewed by 519 persons

Why does an empty paper plate not heat up in the microwave

The first law of thermodynamics internal energy heat and work

Asked by wiki @ in Physics viewed by 519 persons

The first law of thermodynamics states that ΔE= Q− W . Is this also a statement of the principle of …

What happens to gas particles when a gas is compressed

Asked by wiki @ in Physics viewed by 518 persons

What happens to the molecules when a gas is compressed? A. They maintain their temperature. B. There is a drop …


A car traveling 88 km h is 110 m behind

Asked by wiki @ in Physics viewed by 516 persons

A car traveling 92 km/h is 130 m behind a truck traveling 75 km/h. how long will it take the …

How to calculate the spring constant of a rubber band

Asked by wiki @ in Physics viewed by 509 persons

A rubber band has potential energy of 5 J. If the spring constant of the rubber band is 50 N/m, …

What is the source of almost all energy on earth

Asked by wiki @ in Physics viewed by 506 persons

What is the source of almost all energy on Earth? O Earth's hot core O the Sun O stored carbon …


What is the speed of the boat in still water

Asked by wiki @ in Physics viewed by 501 persons

The speed of a boat in still water is 20 mph. it travels from one pier to another with the …

What is the potential energy of the satellite earth system

Asked by wiki @ in Physics viewed by 499 persons

A satellite in earth orbit has a mass of 99 kg and is at an altitude of 2.02 106 m. …

The developmental stages in erik erikson's psychosocial theory each have

Asked by wiki @ in Physics viewed by 494 persons

HELP ME ASAP!!!! Select the correct answer. According to Erik Erikson's psychosocial theory of personality, which stage occurs during adolescence? …