Calculations
Vocabulary
Conceptual Physics
100

Calculate the momentum of an object that weighs 5 kg that is moving at a rate of 3 m/s

15 kg*m/s

100

This is inertia in motion.

What is momentum?

100

This quantity is conserved before and after a collision occurs

What is the Law of Conservation of Momentum?

200

Calculate the mass of an object with a momentum of 15 kg*m/s that was moving at a rate of 5 m/s

3 kg


200

This is the act of momentum being changed over time 

What is impulse?

200

If momentum changes, but the mass stays the same, what can be said about the velocity?

Velocity changes; acceleration changes; force is applied 
300
Car A has a mass of 18,000 kg and is driving at 30 m/s. It collides with Car B that has a mass of 24,000 kg and is at rest. The resulting collision keeps the cars stuck together. What is the velocity of the resulting crash after impact? 

About 12.8 m/s

300

This is the act of force being applied at an instant

What is impact

300

A truck at rest with a mass of 20,000 kg is compared to a mouse with a mass of 0.3 kg moving at a rate of 2 m/s. Which one has a larger momentum?

Mouse

400
A train cart collides with another cart with 4 times the mass of cart A. The lighter cart was initially moving at 20 m/s, while the heavier cart was at rest. What is the resulting velocity after the two carts collide? Assume it is an inelastic collision.

4 m/s

400

This collision is exhibited in a game of billiards when two balls collide

What is an elastic collision?

400

A spit wad is shot from a long straw. Another spit ball is shot from a shorter straw. Which spit wad will travel further and why?

Long straw; it experiences more impulse

500

A ball is rolled down a hill. It has a mass of 3 kg and a velocity of 14 m/s. A spring causes the bowling ball to be launched back at a velocity of 6 m/s.

What is the change in momentum, and if the force of impact lasted for 4 seconds, how much force was applied to the bowling ball?


-36 kg*m/s, 1/9 N

500

This type of collision occurs when a train cart connects itself to another train cart. 

What is an inelastic collision?

500

This type of collision causes the most damage.

What is a bounce/ what is elastic collisions


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