The kinetic energy is always conserved both in elastic collisions and inelastic

Question

The kinetic energy is always conserved both in elastic collisions and inelastic collisions.

The linear momentum of an object is proportional to the mass of the object.

The momentum of an isolated system is always conserved no matter what kind of force is acting inside the system.

A large force always produces a larger impulse on a body than a smaller force.

If the kinetic energy of a single particle is zero, its momentum must be zero.

If two particles of different masses have equal kinetic energy they also have equal momentum.

If the momentum of a single particle is zero, its kinetic energy may not be zero.

Explanation / Answer

1. False, kinetic energy is not conserved in inelastic collisions. 2. True, p=mv. 3. True, the momentum is only not conserved due to OUTSIDE forces. 4. False, a large force provided over a very large time may provide a lesser impulse than a small force over an exceedingly small time. 5. True, if the velocity is zero, the momentum is zero. 6. False, Mv^2=mv'^2 does not imply that Mv=mv'. 7. False, if momentum is zero, then the velocity is zero.

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