The forces that act on the blocks as they descend the ramp are;
- Weight of the block
- Reaction force on the block
- Applied force
- Frictional force
<h3>What is force?</h3>
Force is that which is able to produce a push or a pull. Force causes an object to move from one point to another. For the body that is moving down the ramp there are four forces that act on it;
- Weight of the block
- reaction force on the block
- Applied force
- Frictional force
The weight of the block moves it downwards, the reaction force moves the block upwards, the applied force moves the block forward while the fricional force opposes the forward movement of the block.
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Answer:
COMMENSALISM
Explanation:
Commensalism refers to the relationship that exists between two different organism that belong to different species. In this relationship neither of the organisms are harmed while either of them is benefitted. The web made by the spider between the horns of the deer increases the probability of the spider to catch its prey. The random movement of the deer helps the spider and at the same time it do not harm the deer.
The answer is B. Western Line