1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Art [367]
3 years ago
14

At 2 P.M., ship A is 150 km west of ship B. Ship A is sailing east at 35 km/h and ship B is sailing north at 25 km/h. How fast i

s the distance between the ships changing at 6 P.M.? (Round your answer to one decimal place.)
Physics
1 answer:
labwork [276]3 years ago
7 0

Answer:

The distance between the ships changing at 6PM is 21.29Km/h

Explanation:

Ship A is sailing east at 35Km/h and ship B is sailing West at 25Km/h

Given

dx/dt= 35

dy/dt= 25

dv/dt= ???? at t= 6PM - 2PM= 4

Therefore t=4

We know ship A travels at 150km in the x-direction and Ship A at t=4 travels at 4.35 Which is 140 also in x-direction

So, we use:

D^2 = (150 - x)^2 + y^2;

D^2 = (150 - 140)^2 + y^2

But ship B travels at t=4, at 4.25 =100 in the y-direction

so, let's use the equation:

D^2 = 10^2 + 100^2

= D= sqrt*(10 + 100)

Lets use 2DD' = 2xx' + 2yy'

Differentiating with respect to t we have:

D•d(D)/dt = -(10)•dx/dt + 100•dy/dt

=100.5 d(D)/dt = (-10)•35 + (100)•25

When t=4, we have x=(140-150) =10 and y=100

= D = sqrt*(10^2 + 100^2)

=100.5

= 100.5 dD/dt = 10.35 +100.25

= dD/dt = 21.29km/h

You might be interested in
In 1865, jules verne proposed sending men to the moon by firing a space capsule from a 220-m-long cannon with final speed of 10.
Aneli [31]
I'm going to assume that the 10.97 km/s is the velocity at the end of the cannon.

vi = 0
d = 220m
vf = 10.97 km/s = 10970 m/s
a = ???

vf^2 = vi^2 + 2*a*d
10970^2 = 0 + 2*a*220
10970^2 / 440 = a You are right this is a pretty big number.
2.73 * 10^5 = a


5 0
3 years ago
What do you call a group of sea turtles?
Valentin [98]

Answer:

a bale

Explanation:

a bale is a group of turtles

8 0
3 years ago
Read 2 more answers
As the speed/velocity of an object increases what happens to the kinetic energy of the object
Elanso [62]
The kinetic energy increases
8 0
3 years ago
Read 2 more answers
According to the cooling curve, what is the approximate freezing point of the substance?
Oksana_A [137]

Answer:

I do not know which substance you are referring to, but the freezing point of water is 32°F, or 0°C.

3 0
3 years ago
A 900-kg giraffe runs across a field at a rate of 50 km/hr. What is the magnitude of its momentum? 18 km/hr
Yuri [45]
The correct answer is the one with 45000 kg*km/hr.
the formula is p = m*v 
 900 *50/hr  giving u 45000 
I know this is the correct answer because i have already turned it in and got a 100%.  
7 0
3 years ago
Read 2 more answers
Other questions:
  • A ski starts from rest and slides down a 22 incline 75 m long. if the coefficient of friction is 0.090, what is the ski's speed
    5·1 answer
  • In order for a reaction to begin, what is required?
    5·2 answers
  • What is a force that opposes the motion between two objects in contact with each other?
    8·1 answer
  • Why is it that when a steadily flowing gas flows from a larger diameter pipe to a smaller diameter pipe, what causes the pressur
    10·1 answer
  • Quelqu'un peut m'aider je doit rendre ceci demain merci d'avance ps: c'est noté
    11·1 answer
  • A cyclist rides down a long straight road at a velocity​ (in m/min) given by ​v(t)equals400minus20​t, for 0less than or equalstl
    10·1 answer
  • A baseball of mass 0.25 kg is hit at home plate with a speed of 40 m/s. When it lands in a seat in the left-field bleachers a ho
    15·1 answer
  • How fast can a human go before they reach terminal velocity?​
    13·1 answer
  • In ptolemy’s earth-centered model for the solar system, venus always stays close to the sun in the sky and, because it always st
    14·1 answer
  • *10) A horizontal force of 7N is pushing an object to the left and a second force of
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!