collision theory gizmoDONE.2022
Which is NOT evidence that kinetic energy has been lost in a collision? ---
100%correct answers---One of the objects is at rest after the collision.
Which of the following best describes momenta of two bodies after a two-body collision
if the kinetic energy of the system is conserved? ---100%correct answers---The
momenta must also be conserved.
Which of the following best describes the kinetic energy of each object after a two-body
collision if the momentum of the system is conserved? ---100%correct answers---
The kinetic energy Might also be conserved.
Given the masses of two objects and their velocities before and after a head-on
collision, how could you determine whether the collision was elastic, inelastic or
perfectly inelastic? ---100%correct answers---By calculating the kinetic energy
before and after the collision; If KE is conserved, the collision is elastic. If the collision is
not elastic, look at the final velocities to determine if it is perfectly inelastic.
Given the masses of two objects and their velocities before and after a head-on
collision, how could you determine whether the collision was elastic, inelastic, or
perfectly inelastic? ---100%correct answers---By calculating the kinetic energy
before and after the collision; if the kinetic energy is conserved, the collision is elastic. If
the collision is not elastic, look at the final velocities to determine if it is perfectly
inelastic.
If two automobiles collide, they usually do not stick together. Does this mean the
collision is elastic? ---100%correct answers---No, some kinetic energy is converted
to sound energy and heat energy and some is converted to internal elastic potential
energy as the cars deform, so the collision cannot be elastic.
If two objects collide and one is initially at rest, is it possible for both to be at rest after
the collision? ---100%correct answers---Both cannot be at rest after the collision
because the total initial momentum was greater than zero.
Why is the sound and heat produced by a collision evidence that the collision is not
elastic? ---100%correct answers---Producing sound and heat requires energy.
Because the system of objects loses some energy as sound and heat are produced in
Which is NOT evidence that kinetic energy has been lost in a collision? ---
100%correct answers---One of the objects is at rest after the collision.
Which of the following best describes momenta of two bodies after a two-body collision
if the kinetic energy of the system is conserved? ---100%correct answers---The
momenta must also be conserved.
Which of the following best describes the kinetic energy of each object after a two-body
collision if the momentum of the system is conserved? ---100%correct answers---
The kinetic energy Might also be conserved.
Given the masses of two objects and their velocities before and after a head-on
collision, how could you determine whether the collision was elastic, inelastic or
perfectly inelastic? ---100%correct answers---By calculating the kinetic energy
before and after the collision; If KE is conserved, the collision is elastic. If the collision is
not elastic, look at the final velocities to determine if it is perfectly inelastic.
Given the masses of two objects and their velocities before and after a head-on
collision, how could you determine whether the collision was elastic, inelastic, or
perfectly inelastic? ---100%correct answers---By calculating the kinetic energy
before and after the collision; if the kinetic energy is conserved, the collision is elastic. If
the collision is not elastic, look at the final velocities to determine if it is perfectly
inelastic.
If two automobiles collide, they usually do not stick together. Does this mean the
collision is elastic? ---100%correct answers---No, some kinetic energy is converted
to sound energy and heat energy and some is converted to internal elastic potential
energy as the cars deform, so the collision cannot be elastic.
If two objects collide and one is initially at rest, is it possible for both to be at rest after
the collision? ---100%correct answers---Both cannot be at rest after the collision
because the total initial momentum was greater than zero.
Why is the sound and heat produced by a collision evidence that the collision is not
elastic? ---100%correct answers---Producing sound and heat requires energy.
Because the system of objects loses some energy as sound and heat are produced in
