Answer:
If you know the mass and can find the final speed of the puck, then you know how much impulse was applied to it. If you then take the known (from your video) period of time that the stick was contacting the puck, you can calculate the average force over that time.
If you want to get more sophisticated, you might be able to figure out the forces applied by looking at how the stick bends at any given instant, again from your video.
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The purpose of sending troops to Vietnam was to prevent Vietnam from becoming a communist state- much like the neighbouring China did. The US feared the domino effect in which more and more neighbouring states become communist.
This policy was called the containment policy (the answer is B) - communism were to be contained.
C. References available upon request
1. The arrows show the spread of Christianity
2. More populated Christian settlements
3. The arrows show the path to the densely populated Christian zones
4. It means that not as many Christians settled there
B. It all comes down to customs. In the map some areas were better suited for Christianity because either not a lot of people were there or the people who were there assimilated better. For example, the North American chart show more blue because settlers were met with very little adversity. Some of the native americans fought but most of them assimilated. This is in contrast to Western Asia. The Chinese were more well rooted in their beliefs. This made it harder for others to promote other ideas and as a result the Chinese built dynasty after dynasty because of this philosophy. Clearly, regions played a huge part.
Natural changes to the ecosystem refer to environmental phenomenon that occur naturally. Natural changes include floods, volcanic activity, hurricanes, droughts, and earthquakes. They can be destructive, but they also have advantages.
The benefit of the flood is for example providing nutrients to the soil that were lacking. Also t<span>here may be relocation of fishes and organisms living in water bodies, which improves the ecosystem.
Volcano threatens t</span>he people and animals in the area are threatened, but is has also some advantages, for example:<span>the soil becomes rich due to the nutrients from the volcano.
</span>Hurricanes result in the destruction to infrastructure and loss of lives, vegetation, and livestock. The advantage is that it lowers the temperature and t<span>he wind will cause the topsoil to be distributed to areas in which it was lacking.</span>
