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
Murrr4er [49]
3 years ago
14

HELP Please Hurry

Physics
2 answers:
nlexa [21]3 years ago
6 0

The correct answers are:

1.

A plane landing on an aircraft carrier.

Rain sticking to a window.

Two train cars coupling together.

2. The total momentum is zero.

3. 3.6 (kg*m/s) (Option C)


Explanations:

1) In simple terms (not a textbook definition), perfectly inelastic collision is a collision in which two bodies stick together (or becomes one) after a collision. Now let us have a look at the options:

<em> A baseball bouncing off a bat</em>: After collision, the ball and the bat do not stick to one another; therefore, it is NOT a perfectly inelastic collision.

<em>Bumper cars bumping off of each other</em>: After collision, cars bump off of each other, making their collision elastic, not perfectly inelastic collision.

<em>A cue ball hitting an eight ball and stopping</em>: After collision, although the cue ball stops, but all of its momentum will be transferred to the eight ball; and eight ball will start moving, where is cue ball stops. Not a perfectly inelastic collision.

<em>A plane landing on an aircraft carrier</em>: After plan lands, the plane and the aircraft carrier will be incontent with each other; making their collision perfectly inelastic.

<em>Rain sticking to a window</em>: Rain drop sticking to a window means both stick together after a collision, making it a perfectly inelastic collision.

<em>Two train cars coupling together</em>: Again both cars are sticking together, making it a perfectly inelastic collision.

Hence the correct answers are:

A plane landing on an aircraft carrier.

Rain sticking to a window.

Two train cars coupling together


7) Always remember that in a closed system, the total momentum is conserved, meaning:

Total initial momentum = Total final momentum


<em>Initially, </em>bodies are <em>at rest</em>, the total initial momentum (mv) is zero (since (m+2m)*0 = 0; as v = 0). <em>As it is the closed system</em>, the total final momentum will be equal to the total initial momentum. As the total initial momentum is zero, the total final momentum will also be zero.

Hence the correct answer is: The total momentum is zero.


3) As you can see in the table, the initial momentum of each and every entry is equal to the final momentum. In the case of X, as the final momentum is 3.6 kg*m/s, the initial momentum will be same as the final momentum (by considering the pattern in the table); therefore X (the initial momentum) will be 3.6 kg*m/s.

Hence the correct answer is: X = 3.6 (Option C)




Mandarinka [93]3 years ago
3 0

1.

Answer:

A plane landing on an aircraft carrier.

Rain sticking to a window.

Two train cars coupling together.

Explanation:

In perfectly inelastic collision when two objects collide each other then after collision they stick with each other as in this type of collision there is no separation after collision.

so here we have to choose such cases in the given all options

A plane landing on an aircraft carrier:

After landing the aircraft is in always contact with the ground so it is satisfying the condition of inelastic collision.

Rain sticking to a window:

Rain drops sticking to the window after it collide with it so it is the condition of perfect inelastic collision.

Two train cars coupling together:

Two cars collide and stick with each other so this is the condition of perfect inelastic collision.

2.

Answer:

The total momentum is zero.

Explanation:

As we know that it is a type of perfect inelastic collision so here we can use momentum conservation as there is no external force on it.

Since we know that if net external force on a system is zero then momentum of the system is always conserved.

So in this case both the masses are at rest initially so initial momentum is zero here so at all instants of time final momentum is also zero.

so total momentum is zero

3.

Answer:

Option C   3.6 (kg*m/s)

Explanation:

Since here in all cases we can see that it is following the condition of momentum conservation

Here by momentum conservation we can say that

initial momentum = final momentum

so from given table we know that

final momentum = 3.6 kg m/s

so initial momentum must be same

so value of x = 3.6 kg m/s

You might be interested in
I don’t get this question and i need help!!!
galina1969 [7]

i would say number 2

3 0
3 years ago
Kinetic energy of an object is equal to
Arte-miy333 [17]
Choice-'b' says the formula for kinetic energy in words.

     KE = (1/2) · (M) · (S²)
7 0
3 years ago
Read 2 more answers
A rocket is fired from rest from the ground (y = 0) at time t0 = 0 s. As the rocket is burning its fuel, it moves vertically upw
elixir [45]

Answer:

Explanation:

attached is the solution

6 0
3 years ago
A student is conducting an experiment to determine how far a ballwill roll down a ramp based on the angle of incline what are th
Basile [38]

Answer:ball, ramp, and angle

Explanation: these are the three things that are controls because you can control them

8 0
3 years ago
Calculate the orbital speed (in m/s) of a satellite that circles the Earth with a time period of 12.00 hours. The mass of the Ea
Hoochie [10]

Answer:

v = 3869 m/s

Explanation:

As we know that the orbital speed of the satellite is given as

v = \sqrt{\frac{GM}{r}}

also we know that

time period of the revolution is given as

T = \frac{2\pi r}{v}

now from above equation we know that

T = \frac{2\pi (\frac{GM}{v^2})}{v}

T = \frac{2\pi GM}{v^3}

so we will have

v = (\frac{2\pi GM}{T})^{1/3}

now plug in all data in this equation

v = (\frac{2\pi (6.67 \times 10^{-11})(5.97 \times 10^{24})}{12 \times 3600})^{1/3}

v = 3869 m/s

3 0
3 years ago
Other questions:
  • What is the working principle of lever​
    11·1 answer
  • Why have fungi evolved mechanisms for dispersal of their spores
    8·1 answer
  • Currents circulate in a piece of metal that is pulled through a magnetic field. What are these currents called?
    12·1 answer
  • A solenoid 0.425 m long has 950 turns of wire. What is the magnetic field in the center of the solenoid when it carries a curren
    14·1 answer
  • Which of the following statements about ionization energy is true?. A. In a period, elements farther to the right generally have
    7·1 answer
  • What is a dependent variable
    12·2 answers
  • What mass of water will change its temperature by 20.0 degrees Celsius when 515 J of heat is added to it? the specific heat of w
    10·1 answer
  • Mars is 1.52 times as far from the Sun as Earth is. Predict the time required for Mars to orbit the Sun in Earth days.
    15·1 answer
  • Which of the following has the longest wave length and the lowest frequency
    9·1 answer
  • A sinusoidal wave in a string is described by the wave functiony=0.150 sin (0.800x - 50.0t)where x and y are in meters and t is
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!