Collision the loss of kinetic energy, Physics

A body of mass m1 , moving with velocity u1 collides head  on with a body of mass m2 moving with a velocity u2 the two bodies stick together after the collision the loss of kinetic energy after the collision is ?

Ans) Initial KE of the system= 1/2 [ m1.u1^2  +  m2.u2^2 ]
applying conservation of momentum we get new velocity of the new body=  (m1.u1-m2.u2) / (m1+m2)
new KE of the Body=      [  (m1.u.1 - m2.u2) / 2.(m1+m2)   ]^2
Subtracting and simplyfing we get the loss in KE after Collision=  [ m1.m2. (u1 + u2)^2 ] / [ 2.(m1 + m2) ]

Posted Date: 3/29/2013 5:44:49 AM | Location : United States





Since the objects stick together they will be a part of plastic collision...

so. conservation of kinetic energy cannot be applied...

Apply conservation of linear momentum and then find individual velocities

then loss of kinetic energy will be change in kinetic energy......

So,it will become equal to amount of work done.

Posted by | Posted Date: 3/29/2013 5:46:11 AM


Related Discussions:- Collision the loss of kinetic energy, Assignment Help, Ask Question on Collision the loss of kinetic energy, Get Answer, Expert's Help, Collision the loss of kinetic energy Discussions

Write discussion on Collision the loss of kinetic energy
Your posts are moderated
Related Questions
Q The refractive index of a medium is √3. Compute the angle of refraction if the un-polarised light is incident on it at the polarizing angle of the medium. μ = tan i p = √3

Infra-Red (IR) Detectors:   An IR detector has an impedance of Z= (400+j200) ?  . During design  tests the detector  current  is measured  as  4  µA. What  is  the output v


A block of mass m is tied to a cord of length L that is pivoted at the center of a frictionless table. A second block of mass m is tied to the ?rst block also on a cord of length L

What is neutral buoyancy? Buoyancy is the net upward force experienced by an object submersed in a fluid. Pascal's principle dictates that fluid pressure on an object enhances

what does slope of the tangent drawn on velocity -time graph at any instant of time give?

Uses of Ultrasonics: 1. Ultrasonic are used in diagnosis of disease, physical therapy as surgical tool & industry. 2. They are used in sounding devices to calculate the dept

Study of a rolling ball A large ball bearing or 'bagatelle ball' rolling down a smooth track can be timed by a pendulum. To make the track, fasten together two 120 cm lengths o

Real and Simple or Distinct Poles If all the poles of F1(s) are of first order, Equation may be written in terms of a partial fraction expansion as where p 1 , p 2 ,...

blackbody radiation The radiation the radiance at specific frequencies all across the spectrum generated by a blackbody i.e., a perfect radiator (and absorber) of heat. Physic