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- 1. Multiple Choice
The principle of conservation of momentum:
momentum before is same as momentum after
If no net external forces, the total momentum in a system remains unchanged
the total momentum in a system remains unchanged
If no net external forces, the total initial momentum in a system is equal to the total final momentum of the system
- 2. Multiple Choice
What are the different types of collisions?
elastic
perfectly inelastic
inelastic
completely inelastic
- 3. Multiple Choice
In elastic collisions,
momentum is conserved
kinetic energy is conserved
kinetic energy is not conserved
momentum is not conserved
- 4. Multiple Choice
In inelastic collisions,
momentum is conserved
kinetic energy is conserved
momentum is not conserved
kinetic energy is not conserved
- 5. Multiple Choice
In perfectly inelastic collisions,
momentum is conserved
kinetic energy is conserved
momentum is not conserved
kinetic energy is not conserved
colliding objects stick together
- 6. Multiple Choice
Why are cars made of heavy metal extreriors unsafe compared to those made from fiberglass?
accidents involving fiberglass cars take longer to complete
heavy metal cars have a higher momentum change compared to similar firberglass cars of the same masses and moving at the same velocities
A higher deforming force is experience by occupants of a heavy metal car during an accident
fiberglass has an added component called Zithropod which offers more safety during accidents
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