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Collisions and Forces Quiz
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Collisions and Forces Quiz
Choose the best answer for each multiple-choice question. Answer written questions using complete sentences and show your calculations where needed.
Multiple Choice
Select the best answer.
1.Two carts collide on a level track. If outside forces on the cart system are negligible, what happens to the system’s total momentum during the collision?
- It stays the same.
- It always doubles.
- It becomes zero.
- It changes to kinetic energy.
2.What is the SI unit used to report force?
- Newton (N)
- Joule (J)
- Kilogram (kg)
- Meter per second (m/s)
3.In an ideal elastic collision, which quantities are conserved for an isolated system?
- Momentum only
- Kinetic energy only
- Momentum and kinetic energy
- Neither momentum nor kinetic energy
4.Which instrument can be used to measure the force of a pull?
- Spring scale
- Thermometer
- Graduated cylinder
- Stopwatch
5.Two objects collide and move off together as one combined object. How is this collision classified?
- Perfectly inelastic
- Elastic
- Explosive
- Non-contact
Match the Terms
Match each science term with the description that best fits it.
Written Response and Calculations
Explain your reasoning and include units in calculations.
6.After a collision in which the objects move together, describe what happens to their kinetic energy and name two forms that some of it may become.
7.A student attaches a force-measuring device to a book and pulls the book across a table at constant speed. Describe how the student should use the device to measure the pulling force reliably.
8.A 3 kg cart rolls at 5 m/s into a stationary 2 kg cart. They latch together. Use conservation of momentum to calculate their shared velocity immediately after the collision.
9.Explain one key difference between elastic and inelastic collisions. Give a reasonable real-world example of each.
10.A lab group is testing how different surfaces affect the force needed to slide a small block. Explain why they should measure force and identify two factors they should keep the same for a fair comparison.
3 printable pages
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