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
yan [13]
3 years ago
10

The last stage of a rocket, which is traveling at a speed of 7700 m/s, consist of two parts that are clamped together: a rocket

case with a mass of 250.0 kg and a payload capsule with a mass of 100.0 kg. When the clamp is released, a compressed spring causes the two parts to separate with a relative speed of 910.0 m/s. Assume that all velocities are along the same line.What are the speeds of (a) the rocket case and (b) the payload after they have separated? Assume that all velocities are along the same line. Find the total kinetic energy of the two parts (c) before and (d) after they separate. (e) Account for the difference.
Physics
1 answer:
svetoff [14.1K]3 years ago
3 0

Answer:

Explanation:

Let the velocity of rocket case and payload after the separation be v₁ and v₂ respectively. v₂ will be greater because payload has less mass so it will be fired with greater speed .

v₂ - v₁ = 910

Applying law of conservation of momentum

( 250 + 100 ) x 7700 = 250 v₁ + 100 v₂

2695000 = 250 v₁ + 100 v₂

2695000 = 250 v₁ + 100 ( 910 +v₁ )

v₁ = 7440 m /s

v₂ = 8350 m /s

Total kinetic energy before firing

= 1/2 ( 250 + 100 ) x 7700²

= 1.037575 x 10¹⁰ J

Total kinetic energy after firing

= 1/2 ( 250 x 7440² + 100 x 8350² )

= 1.0405325 x 10¹⁰ J

The kinetic energy has been increased due to addition of energy generated in firing or explosion which separated the parts or due to release of energy from compressed spring.

You might be interested in
Is diet Pepsi heterogeneous or is it homogeneous
Lana71 [14]
Heterogeneous because it has less amount of sugar than the regular Pepsi has
6 0
3 years ago
Read 2 more answers
A race-car drives around a circular track of radius RRR. The race-car speeds around its first lap at linear speed v_iv i ​ v, st
OLEGan [10]

Answer:

The magnitude of the centripetal acceleration increases by 16 times when the linear speed increases by 4 times.

Explanation:

The initial centripetal acceleration, a of the race-car around the circular track of radius , R with a linear speed v is a = v²/R.

When the linear speed of the race-car increases to v' = 4v, the centripetal acceleration a' becomes a' = v'²/R = (4v)²/R = 16v²/R.

So the centripetal acceleration, a' = 16v²/R.

To know how much the magnitude of the car's centripetal acceleration changes, we take the ratio a'/a = 16v²/R ÷ v²/R = 16

a'/a = 16

a' = 16a.

So the magnitude of the centripetal acceleration increases by 16 times when the linear speed increases by 4 times.

8 0
3 years ago
Which of the following best describe a generator ?
zlopas [31]
<span>an apparatus for producing gas, steam, or another product. here is what it means sorry if i couldn't help. </span>
3 0
3 years ago
Read 2 more answers
A bar magnet is held in place while another bar magnet is placed near it. The second bar magnet spins around and
Vinil7 [7]

Answer:

o

Explanation:

the increase energy stored in thw system is proportional to the decrease in kinetic energy

4 0
3 years ago
What is the average speed of a car that moved 40 km in 3 hours?
Naya [18.7K]

<u>A</u> would be the answer, since it would take about 3 hours to cover most of it, 10km/h would be the average speed.


really hope this helps.

3 0
3 years ago
Other questions:
  • Two forces a 60 newton force east and an 80 newton force north
    9·1 answer
  • Which of the following is an example of how a scientist might use a model?
    15·2 answers
  • I would appreciate some help.
    11·1 answer
  • Why is it important for scientists to find better ways to store solar and wind energy?
    5·1 answer
  • Natural selection is part of which step of speciation? *
    12·2 answers
  • Oil can be used to reduce friction.<br> true or fales<br><br> take 100 mark for solving<br> gg
    11·2 answers
  • A 250 g air-track glider is attached to a spring with springconstant 4.0 N/m. Th damping constant due to air resistance is0.015
    5·1 answer
  • If an object is travelling faster than its own sound waves, which of the following is created?
    14·2 answers
  • Two measurments that are the same as each other are called_____?<br><br><br> What are they called???
    8·1 answer
  • A circuit in a radio receiver requires a current of at least 1.0 microamp in order to detect a signal. How many electrons pass t
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!