Work, Power and EnergyHard
Question
Which one of the following is true ?
Options
A.momentum is conserved in all collisions but kinetic energy is conserved in elastic collisions
B.momentum is conserved in all collisions but not kinetic energy
C.both momentum is conserved in all collisions but not kinetic energy
D.neither momentum nor kinetic collisions
Solution
Kinetic energy is not conserved in inelastic collision as some energy is stored as deformation at the point of collision in the form or potential energy.Since no deformation occurs in case of elastic collision so, kinetic energy is conserved in bothelastic and inelastic as in both elastic and external force is applied on them so, nochange in momentum.
Create a free account to view solution
View Solution FreeMore Work, Power and Energy Questions
A point particle of mass 0.1 kg is executing S.H.M. of amplitude of 0.1 m. When theparticle passes through the mean posi...A stone is projected vertically up to reach maximum height ′h′. The ratio of its kinetic energy to potential...A particle is acted upon by a force of constant magnitude which is always perpendicular to the velocity of the particle,...A gas at pressure 6 × 105 N/m2 and volume 1m3 and its pressure falls to 4 × 105 N/m2. When its volume is 3m3. ...A 50 gm bullet moving with a velocity of 10 m/s gets embedded into a 950 gm stationary body. The loss in kinetic energy ...