Answer:
The collision occurs at a height of 1/3 of the total height of cliff.
Explanation:
The situation is represented in the attached figure:
For the stone dropped from top of cliff we have
Initial velocity of drop= 0 m/s.
Now the time at which it attains a velocity of 2v is obtained from first equation of kinematics as
Thus the distance it covers in this time can be calculated using third equation of kinematics as
For the stone thrown upwards the velocity at collision is give as 'v' thus the velocity at which it is thrown upwards can be calculated by first equation of kinematics as
The height over which it changes it's velocity from '3v' to 'v' can be again obtained from third equation of kinematics as
Thus the collision occurs at at a fraction of 1/3 of height.
Answer:
The answer is D. Both A. and C.
Explanation:
Community psychology emerged in the mid-20th-century, largely influenced by social movements, such as feminism and the civil rights movement. Its basic principle is that mental health problems are not only individual, but are also influenced by the social environment, oppression, poverty and other social conditions. It is not enough to treat the individual, if the social environment around him doesn't change which is why an intervention that adresses social conditions is fundamental to decrease the risk of mental disease. Therefore, one of its goals was to change the mental health system, incorporate the perspective of community psychology in treatment but also to take a preventive perspective on mental health, instead of a reactive one.
Answer: The Treaty of Paris of 1763 ended the French and Indian War/Seven Years' War between Great Britain and France, as well as their respective allies. In the terms of the treaty, France gave up all its territories in mainland North America, effectively ending any foreign military threat to the British colonies there.
Explanation: From Google
I believe the answer is: <span>Availability heuristic
</span><span>Availability heuristic is an occurrence when people choose to rely on simplistic examples to discuss a certain topic rather than choose to analyze it with a more complex method. In news, this would make people attribute social problem to specific group of people or a specific party rather than giving it a full thought.</span>
Answer:
This is an example of Centration.
Explanation:
Centration is a term used in developmental psychology, specifically when using Piaget's theory of cognitive development. According to this theory children go through different stages of cognitive development and these are linked to the child's age. From ages 4 to 7, children are in the preoperational stage, and centration is a process that presents itself in this stage. It is the children's tendency to focus only on one salient aspect of a problem, situation or object. One of the most common aspects young children who are in this stage of cognitive development focus on is on the space an object occupies, for example, size or length.
In this case Eliza doesn't focus on the number of buttons in each row. Even though she knows that 10 is more than 8, when put in two different rows, she only focuses on the length of both rows, and because the one with 8 buttons is longer, she will inevitably choose that one.
