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
Marat540 [252]
3 years ago
13

A big red fish with a mass of 20 kg swims with a velocity of 2 m/s toward a small, stationary green fish which has a mass of 10

kg. The big red fish opens its mouth and swallows the small green fish. What will the big red fish's velocity be immediately after swallowing its meal?​
Physics
1 answer:
Nitella [24]3 years ago
4 0

Answer:

1.33m/s

Explanation:

Given parameters:

M1  = 20kg

V1  = 2m/s

V2 = 0m/s

M2  = 10kg

Unknown:

V  = ?

Solution:

As with all systems, the momentum must be conserved and it implies that the starting and ending momentum be the same.

  M1 V1  +  M2 V2  = V (M1 + M2)

M1 is the mass of the big red fish

V1 is the velocity of the big red fish

V2 is the velocity of the green fish

M2 is the mass of the green fish

V is the velocity after swallowing

           (20 x 2) + (10 x 0)  = V (20 + 10)

                      40  = 30V

                      V  = 1.33m/s

You might be interested in
A large, simple pendulum is on display in the lobby of the United Nations building. If the pendulum is 18.5 m in length, what is
zhannawk [14.2K]

Answer:

     t = 1,144 s

Explanation:

The simple pendulum consists of an inextensible string with a mass at the tip, the angular velocity of this is

     w = √( L / g)

The angular velocity is related to the frequency and period

     w = 2π f

      f = 1 / T

     w = 2π / T

Let's replace

     2π / T = √ (L / g)

     T = 2π √ (g / L)

Let's calculate

     T = 2π √ (9.81 / 18.5)

     T = 4,576 s

The definition of period in the time it takes the ball to come and go to a given point (a revolution) in our case we go from the end to the middle point that is a quarter of the path

     t = T / 4

     t = 4,576 / 4

     t = 1,144 s

6 0
3 years ago
Air resistance allow objects to develop full acceleration due to gravity true or false
Aloiza [94]
False. because the object cannot freefall due to resistance, so it cannot develop full acceleration.
3 0
3 years ago
X-rays cannot pass through Earth's atmosphere. Which of these is the best location to place a telescope used to observe x-rays f
Amiraneli [1.4K]
Mountains, tops of buildings, and high-flying aircraft are all part of Earth's atmosphere, no matter how high they are. On the other hand, space doesn't belong to our atmosphere, it is outside of it. Having this in mind, the best location to place a telescope used to observe x-rays from stars is in space.
7 0
3 years ago
Read 2 more answers
Which statement is correct?
miv72 [106K]
'A' is correct. B, C, and D are false statements.
5 0
3 years ago
Read 2 more answers
Nick parks his car at Target and walks 150 ft. north to get to the store. On his way back to the car, he walks 50 ft. before pau
mr Goodwill [35]
75 steps is what he’s missing
7 0
3 years ago
Other questions:
  • a car has a mass of 1.00 x 10^3 kilograms and it has an acceleration of 4.5 meters/second what is the net force on the car
    6·2 answers
  • Where are the longest continuous mountain ranges on Earth located?
    10·1 answer
  • A stationary car with a mass of 1500 kg reaches a velocity of 15 meters per second, 5 seconds after starting. What is the car's
    11·1 answer
  • A jewellery melts 500g of Silver to pour into a mould. Calculate how much energy was released as the silver solidified.
    6·1 answer
  • What is the mystery Greene discussion and why does he say it is something we should all care about ​
    13·1 answer
  • 4. What is the momentum of a 70 kg object traveling at 20 m/s?
    7·1 answer
  • An ideal gas undergoes an adiabatic expansion, a process in which no heat flows into or out of the gas. As a result, (a) the tem
    7·1 answer
  • A solid sphere is placed on a frictionless floor in a very long corridor and is given a quick push so that it begins to slide, w
    6·1 answer
  • Which model could represent a neutral atom of boron?
    9·2 answers
  • I need help with one question on my homework. This is on the Specific Heat Capacity required practical.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!