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
natita [175]
3 years ago
8

A ball is projected at an immovable wall with a speed vi and bounces back the wall in such a manner that it only has 1/3 of its

original linear momentum. a) Determine what fraction of the kinetic energy is lost in the collision.
Physics
1 answer:
sergey [27]3 years ago
5 0

The fraction of the kinetic energy of the ball lost during the collision is \frac{1}{3}.

The given parameters;

  • <em>initial speed of the ball, = vi</em>
  • <em>final momentum of the ball, Pf = ¹/₃Pi</em>

The initial and final momentum of the ball is calculated as;

P_i = m_ivi

P_f = m_fv_f = \frac{1}{3} m_iv_i

The initial and final kinetic energy of the ball is calculated as;

K.E_i = \frac{1}{2} m_iv_i^2 = \frac{1}{2} P_iv_i\\\\K.E_f = \frac{1}{2} m_fv_f^2= \frac{1}{2} (\frac{1}{3} P_iv_i)= \frac{1}{6} P_iv_i

The change in the kinetic energy is calculated as;

\Delta K.E = K.E_f - K.E_i \\\\\Delta K.E = \frac{1}{6} P_iv_i - \frac{1}{2} P_iv_i = \frac{1}{3} P_iv_i

Thus, the fraction of the kinetic energy of the ball lost during the collision is \frac{1}{3}.

Learn more here:brainly.com/question/18566218

You might be interested in
The A note has a frequency of 440 Hz. What is the wavelength if the speed of sound is 343 m/s?
Nina [5.8K]
The wavelength of a wave (λ) is given by λ= \frac{c}{f}
where c is the wave speed and f is the frequency
7 0
3 years ago
Read 2 more answers
Which type of rays have a wavelength shorter than that of visible light?
aniked [119]

Answer:

c

Explanation:

wavelength shorter means energy is higher

the wavelength

radio waves>microwave>infrared rays>gamma rays

6 0
2 years ago
A hummingbird can flutter its wings 4,800 times per minute.
Marianna [84]
80 flutters per second
4 0
3 years ago
Read 2 more answers
What term best describes the regular path of a spacecraft or other object around a planetary body?
Law Incorporation [45]
B. Orbit. The planets orbit the sun, the moon orbits earth, etc.
7 0
3 years ago
Which word is not a good way to describe exercise?
Sveta_85 [38]
Exertion is not a good way to describe exercise but there is also alot more words to describe wrong ways for exercise
6 0
3 years ago
Other questions:
  • The glowing of a neon light is caused by electrons emitting energy as they (1 point)
    10·2 answers
  • Please help<br>please help
    9·1 answer
  • Which contribution did Johannes Kepler make?
    9·2 answers
  • Two students who live on planet X. They want to estimate the circumference. The two students synchronize their watches before on
    12·1 answer
  • (III) An engineer is designing a spring to be placed at the bottom of an elevator shaft. If the elevator cable breaks when the e
    8·2 answers
  • Kinds of solar power stations
    13·1 answer
  • an object is moving with initial velocity of 5 m/s. After 10 seconds final velocity is 10 m/s. Calculate its acceleration.​
    10·1 answer
  • Because the earth's orbit is slightly elliptical, the earth actually gets closer to the sun during part of the year. When the ea
    6·1 answer
  • Two rods, one made of brass and the other made of copper, are joined end to end. The length of the brass section is 0.400 m and
    6·1 answer
  • Why do most carnivores live in forest? given reason ​
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!